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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>制氧机降噪可以用隔音�|?/h1><hr style="margin-bottom:30px">
            <p>&nbsp;&nbsp;隔音�|�不但要考虑隔声性能�Q�还要考虑到观察方�ѝ��出入方�ѝ��不影响车间内正常运输、以�?qi��ng)房间内供�?sh��)、通风�{�。一般隔音罩外墙用隔声性能较好的材料或�l�构�Q�如砖、�؜凝土、纸面石膏板墙等�Q�观察部分��用隔声窗�Q�进出部分��用隔声门或吸声通道�{�。隔声间墙内一般较多��用吸声材料，如穿孔吸声板吊顶、��Y包墙面、以�?qi��ng)吊挂空间吸��C���{��?/p>            <ul class="pager">
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