介绍了高等级公路噪声污染产生的原因，介绍了国内、外降噪的主要措施，同时提出了防噪声方式。
The cause inducing noise pollution on high grade road, and the noise abatement measures both at home and abroad are introduced. A way to precaution noise given.
鹦鹉螺还能抵抗撞击、振动、防盐防雾、防渗水并能经受噪声和电磁干扰的影响。
The Nautilus meets withstands shock, vibration, salt, fog, drip, fungus, acoustic noise, and EMI.
烘干快速高效，充分节约能源，噪声低，防积尘风机。改善工作环境，具有蒸汽电加热二种机型。
Dry rapidly, energy saving efficient, low noise, anti dust blower for improving the working environment. Have two kinds of steam heating steam and dual-use electric steaming type.
防 护罩 上决不能有噪声电压。
在分析干扰噪声的特点的基础上，设计了防电磁干扰的屏蔽系统。
At the same time, a kind of sheltery system preventing electromagnetic disturbance is designed on the basis of researching the character…
在分析干扰噪声的特点的基础上，设计了防电磁干扰的屏蔽系统。
At the same time, a kind of sheltery system preventing electromagnetic disturbance is designed on the basis of researching the character…
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