聲學意義上的大房間與小房間_新聞中心_焦作新航道環?？萍加邢薰?/title> <meta content="" name="keywords" /> <meta content="從幾何意義上很難去界定房間的大與小，比如200m3的房間相對于2000m3的房間是小房間，而2000m3相對于20000m3的房間又是小房間。因此，從幾何角度考慮聲學意義上的大、小房間意義不大。聲學意義上的大房間與小房間是按照房間內聲場的具體情況來劃分的，從本質上講，不同的聲場特性采用不同的聲學處理方式。因此，聲學上大、小房間使用頻率進行界定實質上是界定了不同的聲學處理方式。如果一個房間內的聲場滿" name="description" /> <link rel="canonical" href="http://m.martialartslv.com/"/> <meta name="applicable-device" content="pc,mobile"> <meta name="MobileOptimized" content="width"/> <meta name="HandheldFriendly" content="true"/> <script src="/js/m.js" type="text/javascript"></script> <script type="text/javascript" src="/js/jquery.min.js"></script> <script type="text/javascript" src="/js/slick.js"></script> <link rel="stylesheet" type="text/css" href="/css/xhd.css" /> <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> </head> <body> <div style="position:fixed;left:-9000px;top:-9000px;"><sup id="qi6wi"></sup><button id="qi6wi"></button><small id="qi6wi"></small><nav id="qi6wi"></nav><u id="qi6wi"></u><object id="qi6wi"><code id="qi6wi"><samp id="qi6wi"></samp></code></object><kbd id="qi6wi"><tr id="qi6wi"><object id="qi6wi"></object></tr></kbd><xmp id="qi6wi"></xmp><code id="qi6wi"><center id="qi6wi"><dd id="qi6wi"></dd></center></code><source id="qi6wi"></source><button id="qi6wi"></button><acronym id="qi6wi"></acronym><small id="qi6wi"></small><object id="qi6wi"></object><option id="qi6wi"><sup id="qi6wi"><kbd id="qi6wi"></kbd></sup></option><menu id="qi6wi"><center id="qi6wi"><nav id="qi6wi"></nav></center></menu><bdo id="qi6wi"></bdo><kbd id="qi6wi"></kbd><optgroup id="qi6wi"><noscript id="qi6wi"><tbody id="qi6wi"></tbody></noscript></optgroup><noscript id="qi6wi"><s id="qi6wi"><button id="qi6wi"></button></s></noscript><dd id="qi6wi"></dd><rt id="qi6wi"></rt><noscript id="qi6wi"><rt id="qi6wi"><source id="qi6wi"></source></rt></noscript><dd id="qi6wi"></dd><bdo id="qi6wi"></bdo><kbd id="qi6wi"></kbd><strong id="qi6wi"></strong><button id="qi6wi"></button><samp id="qi6wi"></samp><dd id="qi6wi"></dd><nav id="qi6wi"><td id="qi6wi"><table id="qi6wi"></table></td></nav><button id="qi6wi"><strong id="qi6wi"><sup id="qi6wi"></sup></strong></button><tt id="qi6wi"></tt><nav id="qi6wi"><div id="qi6wi"><dd id="qi6wi"></dd></div></nav><samp id="qi6wi"></samp><legend id="qi6wi"></legend><tr id="qi6wi"></tr><code id="qi6wi"></code><dd id="qi6wi"></dd><kbd id="qi6wi"></kbd><table id="qi6wi"></table><nav id="qi6wi"><div id="qi6wi"><table id="qi6wi"></table></div></nav><small id="qi6wi"><nav id="qi6wi"><div id="qi6wi"></div></nav></small><button id="qi6wi"></button><td id="qi6wi"></td><tt id="qi6wi"></tt><table id="qi6wi"><u id="qi6wi"><td id="qi6wi"></td></u></table><bdo id="qi6wi"></bdo><kbd id="qi6wi"><blockquote id="qi6wi"><tt id="qi6wi"></tt></blockquote></kbd><strong id="qi6wi"></strong> <bdo id="qi6wi"></bdo><acronym id="qi6wi"><tr id="qi6wi"><rt id="qi6wi"></rt></tr></acronym><rt id="qi6wi"></rt><source id="qi6wi"><input id="qi6wi"><sup id="qi6wi"></sup></input></source><tt id="qi6wi"></tt><button id="qi6wi"></button><u id="qi6wi"><table id="qi6wi"><samp id="qi6wi"></samp></table></u><menu id="qi6wi"></menu><tr id="qi6wi"></tr><samp id="qi6wi"><optgroup id="qi6wi"><nav id="qi6wi"></nav></optgroup></samp><samp id="qi6wi"></samp><bdo id="qi6wi"><menu id="qi6wi"><div id="qi6wi"></div></menu></bdo><rt id="qi6wi"></rt><samp id="qi6wi"><optgroup id="qi6wi"><bdo id="qi6wi"></bdo></optgroup></samp><tbody id="qi6wi"><optgroup id="qi6wi"><wbr id="qi6wi"></wbr></optgroup></tbody><label id="qi6wi"><rt id="qi6wi"><samp id="qi6wi"></samp></rt></label><tbody id="qi6wi"><optgroup id="qi6wi"><tr id="qi6wi"></tr></optgroup></tbody><nav id="qi6wi"></nav><menu id="qi6wi"></menu><dd id="qi6wi"><u id="qi6wi"><div id="qi6wi"></div></u></dd><object id="qi6wi"></object><xmp id="qi6wi"></xmp><td id="qi6wi"></td><td id="qi6wi"></td><tt id="qi6wi"></tt><label id="qi6wi"><small id="qi6wi"><blockquote id="qi6wi"></blockquote></small></label><legend id="qi6wi"></legend><tbody id="qi6wi"><button id="qi6wi"><li id="qi6wi"></li></button></tbody><td id="qi6wi"><rt id="qi6wi"><source id="qi6wi"></source></rt></td><div id="qi6wi"></div><samp id="qi6wi"></samp><label id="qi6wi"><rt id="qi6wi"><blockquote id="qi6wi"></blockquote></rt></label><u id="qi6wi"><kbd id="qi6wi"><strong id="qi6wi"></strong></kbd></u><nav id="qi6wi"><u id="qi6wi"><table id="qi6wi"></table></u></nav><sup id="qi6wi"><li id="qi6wi"><strong id="qi6wi"></strong></li></sup><nav id="qi6wi"></nav><u id="qi6wi"><kbd id="qi6wi"><code id="qi6wi"></code></kbd></u><wbr id="qi6wi"><code id="qi6wi"><source id="qi6wi"></source></code></wbr><optgroup id="qi6wi"><label id="qi6wi"><table id="qi6wi"></table></label></optgroup><u id="qi6wi"><li id="qi6wi"><strong id="qi6wi"></strong></li></u><u id="qi6wi"><wbr id="qi6wi"><menu id="qi6wi"></menu></wbr></u><acronym id="qi6wi"></acronym><kbd id="qi6wi"></kbd><li id="qi6wi"></li><rt id="qi6wi"></rt><option id="qi6wi"></option><td id="qi6wi"></td><strong id="qi6wi"><dd id="qi6wi"><bdo id="qi6wi"></bdo></dd></strong><center id="qi6wi"><option id="qi6wi"><legend id="qi6wi"></legend></option></center><kbd id="qi6wi"></kbd> <wbr id="qi6wi"></wbr><tbody id="qi6wi"><blockquote id="qi6wi"><option id="qi6wi"></option></blockquote></tbody><nav id="qi6wi"></nav><small id="qi6wi"></small><tr id="qi6wi"></tr><input id="qi6wi"></input><label id="qi6wi"><bdo id="qi6wi"><blockquote id="qi6wi"></blockquote></bdo></label><bdo id="qi6wi"></bdo><option id="qi6wi"><u id="qi6wi"><rt id="qi6wi"></rt></u></option><tbody id="qi6wi"></tbody><td id="qi6wi"></td><acronym id="qi6wi"></acronym><kbd id="qi6wi"></kbd><nav id="qi6wi"></nav><tr id="qi6wi"><rt id="qi6wi"><s id="qi6wi"></s></rt></tr><legend id="qi6wi"><kbd id="qi6wi"><tr id="qi6wi"></tr></kbd></legend><u id="qi6wi"></u><small id="qi6wi"><tt id="qi6wi"><noscript id="qi6wi"></noscript></tt></small><xmp id="qi6wi"><small id="qi6wi"><tbody id="qi6wi"></tbody></small></xmp><option id="qi6wi"></option><dd id="qi6wi"></dd><xmp id="qi6wi"><div id="qi6wi"><table id="qi6wi"></table></div></xmp><samp id="qi6wi"></samp><legend id="qi6wi"><option id="qi6wi"><s id="qi6wi"></s></option></legend><option id="qi6wi"></option><bdo id="qi6wi"><source id="qi6wi"><table id="qi6wi"></table></source></bdo><rt id="qi6wi"><strong id="qi6wi"><label id="qi6wi"></label></strong></rt><bdo id="qi6wi"><td id="qi6wi"><tbody id="qi6wi"></tbody></td></bdo><bdo id="qi6wi"><small id="qi6wi"><tbody id="qi6wi"></tbody></small></bdo><bdo id="qi6wi"></bdo><object id="qi6wi"></object><legend id="qi6wi"></legend><li id="qi6wi"><label id="qi6wi"><acronym id="qi6wi"></acronym></label></li><source id="qi6wi"></source><input id="qi6wi"></input><wbr id="qi6wi"></wbr><sup id="qi6wi"><noscript id="qi6wi"><blockquote id="qi6wi"></blockquote></noscript></sup><nav id="qi6wi"></nav><input id="qi6wi"></input><option id="qi6wi"><div id="qi6wi"><tr id="qi6wi"></tr></div></option><wbr id="qi6wi"><acronym id="qi6wi"><button id="qi6wi"></button></acronym></wbr><xmp id="qi6wi"></xmp><input id="qi6wi"></input><strong id="qi6wi"></strong><sup id="qi6wi"></sup><tr id="qi6wi"><td id="qi6wi"><kbd id="qi6wi"></kbd></td></tr><legend id="qi6wi"></legend><div id="qi6wi"></div><label id="qi6wi"></label><noscript id="qi6wi"><optgroup id="qi6wi"><acronym id="qi6wi"></acronym></optgroup></noscript></div> <div class="head1"> <div class="w1200 clearfix"> <div class="wel"> <p>歡迎進入焦作新航道環?？萍加邢薰揪W站！</p> </div> <div class="k1"><a href="/sitemap.txt" title="TXT地圖" target="_blank">TXT地圖</a> | <a href="/sitemap.xml" title="XML地圖" target="_blank">XML地圖</a></div> </div> </div> <div class="head2"> <div class="w1200 clearfix"> <div class="logo"><a href="/" target="_blank"><img alt="焦作新航道環?？萍加邢薰? src="/images/logo.png" /></a></div> <div class="logowz"> <p>焦作新航道環?？萍加邢薰?/p> <span>專業研制生產<i>隔音屏障</i>及解決方案</span> </div> <div class="top_contact"> <p>全國咨詢熱線</p> <span>13419790855</span> </div> </div> </div> <div class="head3"> <ul class="x-menu clearfix"> <li> <a href="/" >網站首頁</a> </li> <li> <a href="/ytfl" title="用途分類" target="_blank">用途分類</a> <ul class="x-sub-menu"> <li><a href="http://m.martialartslv.com/dlspz" title="道路聲屏障" target="_blank">道路聲屏障</a></li> <li><a href="http://m.martialartslv.com/gcspz" title="工廠聲屏障" target="_blank">工廠聲屏障</a></li> <li><a href="http://m.martialartslv.com/kdspz" title="空調機組聲屏障" target="_blank">空調機組聲屏障</a></li> <li><a href="http://m.martialartslv.com/lqtspz" title="冷卻塔聲屏障" target="_blank">冷卻塔聲屏障</a></li> <li><a href="http://m.martialartslv.com/fjspz" title="風機聲屏障" target="_blank">風機聲屏障</a></li> <li><a href="http://m.martialartslv.com/xqlcspz" title="小區兩側聲屏障" target="_blank">小區兩側聲屏障</a></li> </ul> </li> <li> <a href="/ysfl" title="樣式分類" target="_blank">樣式分類</a> <ul class="x-sub-menu"> <li><a href="http://m.martialartslv.com/zlx" title="直立型" target="_blank">直立型</a></li> <li><a href="http://m.martialartslv.com/dbhx" title="頂部弧形" target="_blank">頂部弧形</a></li> <li><a href="http://m.martialartslv.com/dbzj" title="頂部折角" target="_blank">頂部折角</a></li> <li><a href="http://m.martialartslv.com/dhxspz" title="大弧形聲屏障" target="_blank">大弧形聲屏障</a></li> <li><a href="http://m.martialartslv.com/fbsspz" title="封閉式聲屏障" target="_blank">封閉式聲屏障</a></li> </ul> </li> <li> <a href="/czfl" title="材質分類" target="_blank">材質分類</a> <ul class="x-sub-menu"> <li><a href="http://m.martialartslv.com/cgbspz" title="彩鋼板聲屏障" target="_blank">彩鋼板聲屏障</a></li> <li><a href="http://m.martialartslv.com/jsbyspz" title="金屬百葉聲屏障" target="_blank">金屬百葉聲屏障</a></li> <li><a href="http://m.martialartslv.com/jswkspz" title="金屬微孔聲屏障" target="_blank">金屬微孔聲屏障</a></li> <li><a href="http://m.martialartslv.com/zhtmPCbspz" title="組合透明PC板聲屏障" target="_blank">組合透明PC板聲屏障</a></li> </ul> </li> <li> <a href="/gcal" title="工程案例" target="_blank">工程案例</a></li> <li> <a href="/xwzx" title="新聞中心" target="_blank">新聞中心</a></li> <li> <a href="/gywm" title="關于我們" target="_blank">關于我們</a></li> <li> <a href="/lxwm" title="聯系我們" target="_blank">聯系我們</a></li> </ul> </div><link href="/css/ncss.css" rel="stylesheet"> <div class="nyimg"></div> <div class="mub02MainContent"> <div class="mub02address"> <div class="container"> <div class="con clearfix"> <a href="/" title="首頁" class="homePage"></a> <p>當前位置：<a href="/">首頁</a> > <a href="http://m.martialartslv.com/xwzx">新聞中心</a> > </p> </div> </div> </div> <div class="newsDetails"> <div class="container clearfix"> <div class="newsDetailsSection"> <a href="/xwzx" title="返回列表頁" class="backNewsList"> <img src="/images/newsDetialsArticle_icon01.png" width="59" height="59" alt="返回列表頁" /></a> <div class="article"> <div class="conBox"> <div class="title"> <h1>聲學意義上的大房間與小房間 </h1> <div class="share"> <p><span>閱讀量：<span id="cntrHits"><span class="dr_show_hits_67">0</span><script type="text/javascript"> $.ajax({ type: "GET", url:"/index.php?s=api&c=module&siteid=1&app=news&m=hits&id=67", dataType: "jsonp", success: function(data){ if (data.code) { $(".dr_show_hits_67").html(data.msg); } else { dr_tips(0, data.msg); } } }); </script></span></span> <span>發表時間：2022-03-09</span> </p> </div> <i></i> <p class="label"> </p> </div> <div class="con" id="wjc"> <p> 從幾何意義上很難去界定房間的大與小，比如200m3的房間相對于2000m3的房間是小房間，而2000m3相對于20000m3的房間又是小房間。因此，從幾何角度考慮聲學意義上的大、小房間意義不大。<br/></p><p> 聲學意義上的大房間與小房間是按照房間內聲場的具體情況來劃分的，從本質上講，不同的聲場特性采用不同的聲學處理方式。因此，聲學上大、小房間使用頻率進行界定實質上是界定了不同的聲學處理方式。如果一個房間內的聲場滿足擴散聲場或混響聲場的性質，類似這種性質的房間就稱之為聲學意義上的大房間。其處理方式可依據賽賓公式、伊林公式（或伊林-努特生公式）進行計算房間內混響時間（RT60）。聲學意義上大房間的尺寸，尤其是長度尺寸要遠遠大于截止頻率的波長尺寸。</p><p> 在一個房間內隨著聲波頻率的降低，如果聲場不滿足擴散聲場或混響聲場的生成條件，從聲學的觀點上應該把此類稱之為聲學意義上的小房間。其長度尺寸與最低工作頻率的波長相差不多，因此，聲學意義上的小房間便不能用統計聲學原理來進行處理，此時應采用波動聲學理論來處理方間問題。</p><p id="_img_parent_tmp" style="text-align:center"><img src="http://m.martialartslv.com/udloeda/ueditor/image/202203/16468160844d9eed.png" title="5"/></p><p></p><p></p><p>2、施羅德頻率 </p><p>在《聲系統工程》一書中，作者給出了界定大、小房間容積的計算公式：</p><p> （1）</p><p> 其中，</p><p> K=2000，為一常數；</p><p> 為房間中頻混響時間，單位為s；</p><p> 為房間的截止頻率，單位赫茲，Hz。</p><p> 式（1）中也就是聲學意義上大小房間的分界頻率，應該把它視為一個頻率的過渡區域，而不是一個嚴格的頻率，是供考慮聲學問題處理時參考用的。換言之，當房間內聲波頻率高于分界頻率時，將有大量的房間簡正模式被聲源的頻率所激發，聲場屬于擴散聲場，按統計學原理處理；而低于分界頻率時則屬于聲學意義上的小房間，按簡正模式或波動聲學方式處理。</p><p> 式（1）實際上是由德國聲學家M.R.Schroeder（M.R.施羅德）于1962年提出。因此，分界頻率也稱為施羅德頻率。由于分界頻率和臨界頻率（下面將介紹）在量值上很接近，故有時也將臨界頻率稱為施羅德頻率。</p><p>下表1中為混響時間、房間容積與臨界頻率對應關系</p><p id="_img_parent_tmp" style="text-align:center"><img src="http://m.martialartslv.com/udloeda/ueditor/image/202203/1646816084ea7c7d.png" title="6.png" alt="6.png"/></p><p> 表1</p><p> 注：上表中的混響時間是指500Hz指1000Hz中頻混響時間。</p><p> 將式（1）改寫為：（2） </p><p> 從式（2）可以看出，當房間的容積確定后，臨界頻率與房間混響時間RT60有關。且隨著混響時間的增大而增大。因此，式（2）應視為聲學大、小房間理論上的分界頻率。</p><p>3、聲學大、小房間的實際分界頻率 </p><p id="_img_parent_tmp" style="text-align:center"><img src="http://m.martialartslv.com/udloeda/ueditor/image/202203/164681608474e18e.png" title="7.png" alt="7.png"/></p><p> 圖1 可聽聲的幾個頻率區段</p><p> 根據研究文獻，有研究者提在可聽聲的頻率范圍內（一般指20Hz~20KHz），可分為四個頻率區段，如圖1所示。臨界頻率兩側的Ⅱ區（簡正模式區域）和Ⅲ（聲擴散區域），前者需要采用波動聲學方法進行處理，后者需要采用統計聲學原理進行處理。由此可見，的確定關系到以哪個頻率為分界線進而采用不同的聲學處理方法。</p><p> 值得注意的是，臨界頻率公式中的混響時間并非任意取值，根據相關標準中規定，在測量頻率范圍為200Hz~4 KHz內，混響時間的平均值的計算公式如下：</p><p> （3）</p><p> 式中，V為房間容積，單位m3；</p><p> 為參考容積，單位m3。</p><p> 因此，當房間的容積確定后，相應的混響時間也就確定了，同樣的便存在一個臨界值。</p><p> 但值得注意的是，對于不同容積的房間，以統計意義為前提的混響時間（擴散聲場）存在一個下限頻率，對此下限頻率的計算有著不同的建議。</p><p> 舒爾茨提出了在1/3倍頻程內至少有20個簡正模式的要求。1/3倍頻程內簡正模式數低于20就進入了簡正模式區。以此作為判斷聲學大、小房間的實際分界頻率的標準。</p><p><br/></p> </div> </div> <div class="context clearfix"> <p class="prevNews bot_left">上一篇：<a href="http://m.martialartslv.com/xwzx/2022030966.html">聲學實驗室具體分為哪幾種</a></p> <p class="NextNews bot_right">下一篇：<a href="http://m.martialartslv.com/xwzx/2022030968.html">消音器種類</a></p> </div> </div> <div class="mub02xgyd"> <div class="top mub02Top"> <h2>推薦閱讀</h2> </div> <div class="conBox"> <ul class="clearfix"> <li><a href="http://m.martialartslv.com/xwzx/2022030970.html" title="陣列式消聲器">陣列式消聲器</a> <span>2022-03-09</span></li> <li><a href="http://m.martialartslv.com/xwzx/2022030969.html" title="消聲器種類及選用與設置">消聲器種類及選用與設置</a> <span>2022-03-09</span></li> <li><a href="http://m.martialartslv.com/xwzx/2022030968.html" title="消音器種類">消音器種類</a> <span>2022-03-09</span></li> <li><a href="http://m.martialartslv.com/xwzx/2022030967.html" title="聲學意義上的大房間與小房間 ">聲學意義上的大房間與小房間 </a> <span>2022-03-09</span></li> <li><a href="http://m.martialartslv.com/xwzx/2022030966.html" title="聲學實驗室具體分為哪幾種">聲學實驗室具體分為哪幾種</a> <span>2022-03-09</span></li> <li><a href="http://m.martialartslv.com/xwzx/2022030965.html" title="不同類別的吸聲板介紹">不同類別的吸聲板介紹</a> <span>2022-03-09</span></li> <li><a href="http://m.martialartslv.com/xwzx/2022030964.html" title="建筑聲學吸聲材料及原理">建筑聲學吸聲材料及原理</a> <span>2022-03-09</span></li> <li><a href="http://m.martialartslv.com/xwzx/2022030963.html" title="建筑聲學指的是什么">建筑聲學指的是什么</a> <span>2022-03-09</span></li> </ul> </div> </div> </div> <div class="InpageSidebar01 InpageSidebar02"> <div class='top'> <h2><a>新聞中心</a></h2> </div> <div class='classify'> <i></i> <ul class='clearfix'> </ul> </div> <div class="xgzx"> <h3>熱門產品</h3> <p><a href="http://m.martialartslv.com/dlspz/2022030433.html" title="道路兩側聲屏障">道路兩側聲屏障</a></p> <p><a href="http://m.martialartslv.com/gcspz/2022030434.html" title="工廠聲屏障">工廠聲屏障</a></p> <p><a href="http://m.martialartslv.com/gcspz/2022030436.html" title="工廠聲屏障">工廠聲屏障</a></p> <p><a href="http://m.martialartslv.com/lqtspz/2022030442.html" title="冷卻塔隔聲屏障">冷卻塔隔聲屏障</a></p> <p><a href="http://m.martialartslv.com/xqlcspz/2022030447.html" title="小區聲屏障">小區聲屏障</a></p> <p><a href="http://m.martialartslv.com/xqlcspz/2022030448.html" title="小區兩側聲屏障">小區兩側聲屏障</a></p> <p><a href="http://m.martialartslv.com/dlspz/2022031574.html" title="道路聲屏障">道路聲屏障</a></p> <p><a href="http://m.martialartslv.com/dlspz/2022030432.html" title="高架橋兩側聲屏障">高架橋兩側聲屏障</a></p> </div> <div class="sidebarLinkUs"> <h3>聯系我們</h3> <p>電話：13526607925</p> <p>手機：13419790855</p> <p>地址：河南省焦作市武陟縣新城產業園焦作新航道隔音工廠</p> <a href="/lxwm" class="zxzx"> <span></span> <em>在線咨詢<img src="/images/mub02_jt02.png" width="8" height="14" alt="在線咨詢" /></em> </a></div> </div>  <script type="text/javascript"> var Len = $(".InpageSidebar02 .classify li").length; var Height = $(".InpageSidebar02 .classify li").eq(0).height() + 1; $(".InpageSidebar02 .classify li").hover(function () { var This = $(this).index() + 1; var Height2 = Height * This; $(".InpageSidebar02 .classify i").stop().animate({ height: Height2 + 'px' }, 300); }, function () { $(".InpageSidebar02 .classify i").stop().animate({ height: 0 }, 300); }) </script> </div> </div> </div> <script src="/js/wjc.js"></script> <div class="foot1"> <div class="w1200 clearfix"> <div class="ff1"> <div class="ftlt">聯系方式：</div> <div class="lxfs"> <p>咨詢熱線：13419790855</p> <p>聯系電話：13526607925</p> <p>公司地址：河南省焦作市武陟縣新城產業園焦作新航道隔音工廠</p> </div> </div> <div class="ff2"> <div class="ftlt">快捷鏈接：</div> <div class="fnav"> <a href="/gywm" title="關于我們" target="_blank">關于我們</a> <a href="/ytfl" title="用途分類" target="_blank">用途分類</a> <a href="/ysfl" title="樣式分類" target="_blank">樣式分類</a> <a href="/czfl" title="材質分類" target="_blank">材質分類</a> <a href="/gcal" title="工程案例" target="_blank">工程案例</a> <a href="/xwzx" title="新聞中心" target="_blank">新聞中心</a> <a href="/cjwt" title="常見問題" target="_blank">常見問題</a> <a href="/lxwm" title="聯系我們" target="_blank">聯系我們</a> </div> </div> <div class="ff3"><img src="http://m.martialartslv.com/udloeda/202206/facdbbb7379529f.jpg" /></div> </div> </div> <div class="foot2"> <div class="w1200"> <div class="yqlj"> 友情鏈接： <a href="www.yuanhanggeyin.com" title="專業做隔音的公司" target="_blank">專業做隔音的公司</a> <a href="www.yhgygc.com" title="隔音降噪工程廠家" target="_blank">隔音降噪工程廠家</a> <a href="www.yhgyjt.com" title="噪音治理公司" target="_blank">噪音治理公司</a> </div> </div> </div> <div class="foot3"> <div class="w1200 clearfix"> <div class="row"> <div class="copyr col-md-8"> Copyright ? 焦作新航道環?？萍加邢薰? All rights reserved <a rel="nofollow" target="_blank">豫ICP備2022011851號-1</a> <a href="/images/yyzz.jpg" target='_blank'>營業執照</a></div> </div> </div> </div> <div class="float_zoosnet"> <a class="float_mess" target="_blank" > <img src="/images/f-chat.png"> <p>點擊咨詢</p> </a> <a class="float_tell"><img src="/images/f-tel.gif"> <p>13419790855</p> </a> <a class="float_Qr"><img src="/images/f-wechat.png"> <img src="http://m.martialartslv.com/udloeda/202206/facdbbb7379529f.jpg" class="float_Qr_img"></a> <a href="#" class="float_retrun"><img src="/images/f-top.png"></a> </div> <script> if($(window).scrollTop() > 168){ $('.head3').addClass('scroll'); } $(window).scroll(function () { var len = $(this).scrollTop(); if (len > 168) { $('.head3').addClass('scroll'); }else{ $('.head3').removeClass('scroll') } }); </script> <script> var _hmt = _hmt || []; (function() { var hm = document.createElement("script"); hm.src = "https://#/hm.js?088eff4735a8329cb11630b350733152"; var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(hm, s); })(); </script> <a href="http://m.martialartslv.com/">级片免费视频在线</a> <div style="position:fixed;left:-9000px;top:-9000px;"><sup id="qi6wi"></sup><button id="qi6wi"></button><small id="qi6wi"></small><nav id="qi6wi"></nav><u id="qi6wi"></u><object id="qi6wi"><code id="qi6wi"><samp id="qi6wi"></samp></code></object><kbd id="qi6wi"><tr id="qi6wi"><object id="qi6wi"></object></tr></kbd><xmp id="qi6wi"></xmp><code id="qi6wi"><center id="qi6wi"><dd id="qi6wi"></dd></center></code><source id="qi6wi"></source><button id="qi6wi"></button><acronym id="qi6wi"></acronym><small id="qi6wi"></small><object id="qi6wi"></object><option id="qi6wi"><sup id="qi6wi"><kbd id="qi6wi"></kbd></sup></option><menu id="qi6wi"><center id="qi6wi"><nav id="qi6wi"></nav></center></menu><bdo id="qi6wi"></bdo><kbd id="qi6wi"></kbd><optgroup id="qi6wi"><noscript id="qi6wi"><tbody id="qi6wi"></tbody></noscript></optgroup><noscript id="qi6wi"><s id="qi6wi"><button id="qi6wi"></button></s></noscript><dd id="qi6wi"></dd><rt id="qi6wi"></rt><noscript id="qi6wi"><rt id="qi6wi"><source id="qi6wi"></source></rt></noscript><dd id="qi6wi"></dd><bdo id="qi6wi"></bdo><kbd id="qi6wi"></kbd><strong id="qi6wi"></strong><button id="qi6wi"></button><samp id="qi6wi"></samp><dd id="qi6wi"></dd><nav id="qi6wi"><td id="qi6wi"><table id="qi6wi"></table></td></nav><button id="qi6wi"><strong id="qi6wi"><sup id="qi6wi"></sup></strong></button><tt id="qi6wi"></tt><nav id="qi6wi"><div id="qi6wi"><dd id="qi6wi"></dd></div></nav><samp id="qi6wi"></samp><legend id="qi6wi"></legend><tr id="qi6wi"></tr><code id="qi6wi"></code><dd id="qi6wi"></dd><kbd id="qi6wi"></kbd><table id="qi6wi"></table><nav id="qi6wi"><div id="qi6wi"><table id="qi6wi"></table></div></nav><small id="qi6wi"><nav id="qi6wi"><div id="qi6wi"></div></nav></small><button id="qi6wi"></button><td id="qi6wi"></td><tt id="qi6wi"></tt><table id="qi6wi"><u id="qi6wi"><td id="qi6wi"></td></u></table><bdo id="qi6wi"></bdo><kbd id="qi6wi"><blockquote id="qi6wi"><tt id="qi6wi"></tt></blockquote></kbd><strong id="qi6wi"></strong> <bdo id="qi6wi"></bdo><acronym id="qi6wi"><tr id="qi6wi"><rt id="qi6wi"></rt></tr></acronym><rt id="qi6wi"></rt><source id="qi6wi"><input id="qi6wi"><sup id="qi6wi"></sup></input></source><tt id="qi6wi"></tt><button id="qi6wi"></button><u id="qi6wi"><table id="qi6wi"><samp id="qi6wi"></samp></table></u><menu id="qi6wi"></menu><tr id="qi6wi"></tr><samp id="qi6wi"><optgroup id="qi6wi"><nav id="qi6wi"></nav></optgroup></samp><samp id="qi6wi"></samp><bdo id="qi6wi"><menu id="qi6wi"><div id="qi6wi"></div></menu></bdo><rt id="qi6wi"></rt><samp id="qi6wi"><optgroup id="qi6wi"><bdo id="qi6wi"></bdo></optgroup></samp><tbody id="qi6wi"><optgroup id="qi6wi"><wbr id="qi6wi"></wbr></optgroup></tbody><label id="qi6wi"><rt id="qi6wi"><samp id="qi6wi"></samp></rt></label><tbody id="qi6wi"><optgroup id="qi6wi"><tr id="qi6wi"></tr></optgroup></tbody><nav id="qi6wi"></nav><menu id="qi6wi"></menu><dd id="qi6wi"><u id="qi6wi"><div id="qi6wi"></div></u></dd><object id="qi6wi"></object><xmp id="qi6wi"></xmp><td id="qi6wi"></td><td id="qi6wi"></td><tt id="qi6wi"></tt><label id="qi6wi"><small id="qi6wi"><blockquote id="qi6wi"></blockquote></small></label><legend id="qi6wi"></legend><tbody id="qi6wi"><button id="qi6wi"><li id="qi6wi"></li></button></tbody><td id="qi6wi"><rt id="qi6wi"><source id="qi6wi"></source></rt></td><div id="qi6wi"></div><samp id="qi6wi"></samp><label id="qi6wi"><rt id="qi6wi"><blockquote id="qi6wi"></blockquote></rt></label><u id="qi6wi"><kbd id="qi6wi"><strong id="qi6wi"></strong></kbd></u><nav id="qi6wi"><u id="qi6wi"><table id="qi6wi"></table></u></nav><sup id="qi6wi"><li id="qi6wi"><strong id="qi6wi"></strong></li></sup><nav id="qi6wi"></nav><u id="qi6wi"><kbd id="qi6wi"><code id="qi6wi"></code></kbd></u><wbr id="qi6wi"><code id="qi6wi"><source id="qi6wi"></source></code></wbr><optgroup id="qi6wi"><label id="qi6wi"><table id="qi6wi"></table></label></optgroup><u id="qi6wi"><li id="qi6wi"><strong id="qi6wi"></strong></li></u><u id="qi6wi"><wbr id="qi6wi"><menu id="qi6wi"></menu></wbr></u><acronym id="qi6wi"></acronym><kbd id="qi6wi"></kbd><li id="qi6wi"></li><rt id="qi6wi"></rt><option id="qi6wi"></option><td id="qi6wi"></td><strong id="qi6wi"><dd id="qi6wi"><bdo id="qi6wi"></bdo></dd></strong><center id="qi6wi"><option id="qi6wi"><legend id="qi6wi"></legend></option></center><kbd id="qi6wi"></kbd> <wbr id="qi6wi"></wbr><tbody id="qi6wi"><blockquote id="qi6wi"><option id="qi6wi"></option></blockquote></tbody><nav id="qi6wi"></nav><small id="qi6wi"></small><tr id="qi6wi"></tr><input id="qi6wi"></input><label id="qi6wi"><bdo id="qi6wi"><blockquote id="qi6wi"></blockquote></bdo></label><bdo id="qi6wi"></bdo><option id="qi6wi"><u id="qi6wi"><rt id="qi6wi"></rt></u></option><tbody id="qi6wi"></tbody><td id="qi6wi"></td><acronym id="qi6wi"></acronym><kbd id="qi6wi"></kbd><nav id="qi6wi"></nav><tr id="qi6wi"><rt id="qi6wi"><s id="qi6wi"></s></rt></tr><legend id="qi6wi"><kbd id="qi6wi"><tr id="qi6wi"></tr></kbd></legend><u id="qi6wi"></u><small id="qi6wi"><tt id="qi6wi"><noscript id="qi6wi"></noscript></tt></small><xmp id="qi6wi"><small id="qi6wi"><tbody id="qi6wi"></tbody></small></xmp><option id="qi6wi"></option><dd id="qi6wi"></dd><xmp id="qi6wi"><div id="qi6wi"><table id="qi6wi"></table></div></xmp><samp id="qi6wi"></samp><legend id="qi6wi"><option id="qi6wi"><s id="qi6wi"></s></option></legend><option id="qi6wi"></option><bdo id="qi6wi"><source id="qi6wi"><table id="qi6wi"></table></source></bdo><rt id="qi6wi"><strong id="qi6wi"><label id="qi6wi"></label></strong></rt><bdo id="qi6wi"><td id="qi6wi"><tbody id="qi6wi"></tbody></td></bdo><bdo id="qi6wi"><small id="qi6wi"><tbody id="qi6wi"></tbody></small></bdo><bdo id="qi6wi"></bdo><object id="qi6wi"></object><legend id="qi6wi"></legend><li id="qi6wi"><label id="qi6wi"><acronym id="qi6wi"></acronym></label></li><source id="qi6wi"></source><input id="qi6wi"></input><wbr id="qi6wi"></wbr><sup id="qi6wi"><noscript id="qi6wi"><blockquote id="qi6wi"></blockquote></noscript></sup><nav id="qi6wi"></nav><input id="qi6wi"></input><option id="qi6wi"><div id="qi6wi"><tr id="qi6wi"></tr></div></option><wbr id="qi6wi"><acronym id="qi6wi"><button id="qi6wi"></button></acronym></wbr><xmp id="qi6wi"></xmp><input id="qi6wi"></input><strong id="qi6wi"></strong><sup id="qi6wi"></sup><tr id="qi6wi"><td id="qi6wi"><kbd id="qi6wi"></kbd></td></tr><legend id="qi6wi"></legend><div id="qi6wi"></div><label id="qi6wi"></label><noscript id="qi6wi"><optgroup id="qi6wi"><acronym id="qi6wi"></acronym></optgroup></noscript></div> <script> (function(){ var bp = document.createElement('script'); var curProtocol = window.location.protocol.split(':')[0]; if (curProtocol === 'https') { bp.src = 'https://zz.bdstatic.com/linksubmit/push.js'; } else { bp.src = 'http://push.zhanzhang.baidu.com/push.js'; } var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(bp, s); })(); </script> </body> </html>