色欲av无码免费一区二区三区_噪音危害和常見(jiàn)的治理方法_深圳市華美佳環(huán)?？萍加邢薰?/title> <meta name="keywords" content="噪音危害和常見(jiàn)的治理方法"> <meta name="description" content="噪聲的危害噪聲是一類(lèi)引起人煩躁、或音量過(guò)強而危害人體健康的聲音。噪聲通常是指那些難聽(tīng)的，令人厭煩的聲音。噪音的波形是雜亂無(wú)章的。從環(huán)境保護的角度看，凡是影響人們正常學(xué)習，工作和休息的聲音凡是人們在某些場(chǎng)合“不需要的聲音”，都屬于噪聲。隨著(zhù)現代工業(yè)生產(chǎn)的發(fā)展，噪音污染已經(jīng)成為繼水污染、空氣污染、廢物污染的第四大環(huán)境公..."> <link type="text/css" href="style/style.css" rel="stylesheet" /> <link href="style/ddlevelsmenu-base.css" rel="stylesheet" type="text/css"> <script type="text/javascript" src="js/function.js"></script> <script type="text/javascript" src="js/ddlevelsmenu.js"></script> <script type="text/javascript"> ddlevelsmenu.setup("ddtopmenubar", "topbar") //ddlevelsmenu.setup("mainmenuid", "topbar|sidebar") </script> <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> <script>var V_PATH="/";window.onerror=function(){ return true; };</script> </head> <body> 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onClick="javascript:history.back();" >返回</span></div> <div id="avu4wkgzb" class="news_content" id="news_content"> <FONT face=Verdana>噪聲的危害<BR>噪聲是一類(lèi)引起人煩躁、或音量過(guò)強而危害人體健康的聲音。 <BR>噪聲通常是指那些難聽(tīng)的，令人厭煩的聲音。噪音的波形是雜亂無(wú)章的。從環(huán)境保護的角度看，凡是影響人們正常學(xué)習，工作和休息的聲音凡是人們在某些場(chǎng)合“不需要的聲音”，都屬于噪聲。<BR>隨著(zhù)現代工業(yè)生產(chǎn)的發(fā)展，噪音污染已經(jīng)成為繼水污染、空氣污染、廢物污染的第四大環(huán)境公害。對人類(lèi)的健康造成了很大的危害，所以我們必須把治理噪音污染重視起來(lái)。<BR><BR>噪音的治理幾種方法<BR>（1）降低聲源噪音，工業(yè)、交通運輸業(yè)可以選用低噪音的生產(chǎn)設備和改進(jìn)生產(chǎn)工藝，或者改變噪音源的運動(dòng)方式（如用阻尼、隔振等措施降低固體發(fā)聲體的振動(dòng)）。<BR>（2）在傳音途徑上降低噪音，控制噪音的傳播，改變聲源已經(jīng)發(fā)出的噪音傳播途徑，如采用吸音、隔音、音屏障、隔振等措施，以及合理規劃城市和建筑布局等。<BR>（3）受音者或受音器官的噪音防護，在聲源和傳播途徑上無(wú)法采取措施，或采取的聲學(xué)措施仍不能達到預期效果時(shí)，就需要對受音者或受音器官采取防護措施，如長(cháng)期職業(yè)性噪音暴露的工人可以戴耳塞、耳罩或頭盔等護耳器。<BR><BR>　　噪音控制在技術(shù)上雖然現在已經(jīng)成熟，但由于現代工業(yè)、交通運輸業(yè)規模很大，要采取噪音控制的企業(yè)和場(chǎng)所為數甚多，因此在防止噪音問(wèn)題上，必須從技術(shù)、經(jīng)濟和效果等方面進(jìn)行綜合權衡。當然，具體問(wèn)題應當具體分析。在控制室外、設計室、車(chē)間或職工長(cháng)期工作的地方，噪音的強度要低；庫房或少有人去車(chē)間或空曠地方，噪音稍高一些也是可以的?？傊?，對待不同時(shí)間、不同地點(diǎn)、不同性質(zhì)與不同持續時(shí)間的噪音，應有一定的區別。<BR></FONT> </div> <div style="margin-top:10px;"> 上一條： <a href="News_detail.asp?id=22" 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