Through analysis and research on the noise and vibration in the test ground of vibratory road roller, measures have been taken to lower the noise and vibration level and good effect has been resulted.
对压路机试车场噪声与振动进行分析研究，采取几项措施的综合治理，试车场的减振降噪取得较好的效果。
Probably the most significant finding from research on noise is that its predictability is more important than how loud it is.
也许对噪音的研究中最重要的发现是，噪音的可预测性比噪音的大小更重要。
One of the most recent noise-reducing technologies shepherded through the research process by NASA and now making a difference on commercial jet engines is chevrons.
一项最新的减噪技术引领着NASA的研究进程，并使商业喷气式引擎焕然一新，这就是chevrons(译注——引擎喷口的锯齿状后缘设计)。
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