隔音材料
That material showed the characteristics of good sound absorption, low cost of preparation and non-pollution to the environment.
该种材料具有吸声性能好、成本低、对环境无污染等优点。
Underwater Piston Sound Source Based on Gaint Magnetostrictive Material
基于超磁致伸缩材料的活塞式水下声源
As known, intake and exhaust systems often contain a porous sound-absorbing material, such as filter element in the intake air-cleaner and glass fiber in the exhaust muffler.
进、排气系统内往往含有多孔吸声材料,比如进气空滤器的滤芯和排气消声器内的玻璃纤维。
Try to Discuss the Service Characteristic and Development of the Public Library's Sound and Video Material
试述公共图书馆音像资料服务的特点及发展
Sound hands-on skills in material inspection process.
具有良好的材料检验动手能力.
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