noise propagation meaning in English
噪声传播
Examples
- Simulation for torpedo radiated noise propagation properties
鱼雷辐射噪声传播特性的仿真 - Based upon discussion on the way of noise propagation in internal combustion engine , a variety of methods for noise source identification and some of new technology occurred in this field in recent years are expounded with emphases in this paper
摘要在论述了内燃机噪声源的传播途径基础上，着重剖析了用于内燃机噪声源识别的各种方法和近年来在该领域出现的一些新技术。 - In this paper , it analyzes the mechanism of automobile noise polytechnic and routes of noise propagation , expoundes the research of active control and passive control of the vibration and noise reduction control technology of automobile . then it puts forward the means of automobile noise reduction in practical application
从汽车噪声的产生机理入手,分析了噪声传播的途径,从主动控制与被动控制两方面对汽车减振降噪技术进行了研究,介绍了实际应用的降噪方法 - In this paper the train running noise level has been predicted with the theory of point sound source . the sound exposure level of a train set pass , equivalent continuous sound level and maximum sound level of a train set pass has been taken as estimate values , and some kinds of affixation attenuation on the course of noise propagation is considered , then the corresponding visual software has been developed . these make it convenient and precise to predict the noise level
本文从点声源的理论出发，对列车运行噪声进行预测计算，采用一列车通过时的单发暴露声级、时间特性的最大声压级和一定时间内的等效声级等作为噪声评价量，并考虑了噪声传播过程中的各种附加衰减，编制了相应的可视化软件，使噪声预测计算方便、准确。 - At the same time this paper calculates the effect of train velocity on noise propagation , when mach number is 0 . 1 , sound velocity less effects on noise level ; when mach number is 0 . 4 , the difference value is about 2db whether to consider the sound velocity . so when the train velocity is not very high , the effect of sound velocity may not be considered
本文同时计算了列车运行速度对噪声传播的影响，当马赫数为0 . 1时，声音的传播速度对声级的影响是很小的，当马赫数为0 . 4时，考虑声速与不考虑声速影响的最大值的差值大约为2db左右，因此在列车速度不是很高的情况下可以不考虑声速的影响。