1) ventilation silencer
通风消声器
1.
The paper introduces the evaluation index of ventilation silencer;analyzes the test data and methods;dis-cusses the existing problems in the course of evaluation of insertion loss,dissipation coefflcient and flow noise;puts forward the improving suggestions so as to raise the practicability and contrast of the test data in laboratories.
介绍了通风消声器的评价指标,对检测数据和检测方法进行了分析,讨论了评价插入损失、阻力系数和再生噪声过程中存在的问题,提出了改进建议,以提高各实验室检测数据的实用性和可比性。
2) impedance compound muffler
排油烟通风复合消声器
1.
After analyzing frequency characteristics of the noise from catering trade, we have designed a new type of excellent impedance compound muffler by means of reducing and preventing pollution of cooking oil-smoke ,which has solved the contradiction of noise pollution and exhausting oil-smoke at the same time.
分析了饮食业后堂噪声的频率特性,采取隔声、吸声、消声控制技术和防油雾措施,并独创设计了一种排油烟通风复合消声器,解决了同时排油烟和降噪的难题,得出了饮食业后堂噪声综合控制的有效工艺。
3) the natural ventilation window for noise elimination
自然通风消声窗
1.
One of the affects to reduce the noise is to build in the natural ventilation window for noise elimination.
道路交通噪声污染影响人们的正常工作、生活与休息,采取降噪措施的方法之一是安装自然通风消声窗。
4) low-noise ventilator
低噪声通风器
5) noise attenuated outlet
消声风口
6) fan muffler
风机消声
补充资料：通风
1.空气流通;透气。 2.透露消息。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条