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            <div   id="jhdhpxxdx"   class="date-wrap"> <span id="jhdhpxxdx"    class="date"> 02 </span> <span id="jhdhpxxdx"    class="month"> 2021-04 </span> </div>
            <div   id="jhdhpxxdx"   class="author"> By <a href="javascript:;"> <a href='mailto:'>���岩声学</a> </a> </div>
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            <h1><i class="fa fa-envira"></i>重庆(ji��n)隔音公司:岩棉隔音�?/h1><hr style="margin-bottom:30px">
            <p>&nbsp;隔音板声��x(ch��ng)��一�U��L状能量，需要介质才能传播。声韛_��同一�U�介质中传播�Ӟ��介质密度���大�Q�传播速度���快。比如在常温�I�气中的传播速度�U��ؓ(f��)340�c?�U�，在铁轨中的传播速度�U��ؓ(f��)5200�c?�U��?/p>
<div>声音的另一�U�传播就是跨介质传播。即从一�U�介质，�I�过两种介质的��(f��)界接触面�q�入另一�U�介质，此时�Q�声能的传递实质是振动�q�度的传递。跨介质传播�Ӟ��两种介质的密度相差越大，声能的损耗越大。而实际应用中�Q�空气�ؓ(f��)人类常态下�z�d���I�间�Q�于是与�I�气密度相差���大的材料一般�ؓ(f��)密度很高的材料（比空气密度还要低很多的材料除�?ji��n)真�I�，�q�真的不多）(j��)�Q�即可视为隔��x(ch��ng)��料。密度越高，隔音效果���好。这��L(f��ng)��材料制成的板材，�U�Cؓ(f��)隔音�ѝ�?/div>
<div>隔音板�ƈ不是所有频率的声音都能阻隔�Q�物体都有固有共振频率，接近物体共振频率的声韻I��隔音板的隔音效果显著降低�?/div>
<div>隔音板有隔空气声与振动声的区别。空气声隔音板，即阻隔的是在�I�气中传播的声音的板材。振动声隔音板即阻隔的是在刚性构�Ӟ��如钢�{��؜凝土整体式房屋）(j��)中传播的声音的板材和�pȝ���?/div>            <ul class="pager">
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