本文通过试验研究和理论分析研究了混凝土(空心)砖墙体的隔声性能。
In this paper, through the experimental study and theoretical analysis, sound isolation behavior of concrete hollow brick wall is studied.
通过对驾驶室内空气声、固体声和混响声的分析，说明了简易式驾驶室的声学特性对耳旁噪声的影响。
On analysis, it is explained that the efcct of air, solid and reverberant noise within the cab on the car noise is illustrated in detail.
通过声模拟实验和声振分析计算以及振动测量，研究了床头箱体在整机噪声中的作用。
Thereafter, with the sound simulation and the vibration measurements, the effects of the headstock on the noise of the lathe are studied.
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