在标准半消声室，用B&K3560噪声测量分析系统对4110Q柴油机整机和油底壳、飞轮壳、喷油泵、摇臂罩等零部件的噪声进行了台架试验研究。
The noise of 4110Q diesel engine and its oil pan, flywheel cover, oil pump, valve chamber has been studied by the analysis system of B&K3560 in the normal Semi-anechoic chamber.
通过对不同的工况下同一噪声传递路径的测量分析，发现了传递函数的峰值存在频率偏移。
Meanwhile, in different working condition, the measuring of the same noise transfer path gives results that have minor offset of peak values positions between each test.
计算机测量肺动脉和背景噪声的信号强度，计算出肺动脉的信噪比(SNR)，并对肺动脉分支数量进行计数定量分析。
Image quality were quantified by measuring signal-to-noise ratio (SNR) of pulmonary arteries and counting the Numbers of pulmonary arteries.
本文主要介绍近年来船舶行业水下噪声研究进展概况。包括水下噪声形成机理和预报；水下噪声控制技术；水下噪声近代测量分析技术。
The progresses in investigations on the mechanism and predication of underwater noise, its control techniques, new measuring methods and techniques of analysis are reviewed.
本文论述了测量分析燃烧噪声的目的和意义，它是进行燃烧室声疲劳研究及燃烧稳定性主动控制的基础。
The study on dynamic response of thin-wall structure excited by acoustic loads is the basis to evaluate and design the structure sonic fatigue.
本文论述了测量分析燃烧噪声的目的和意义，它是进行燃烧室声疲劳研究及燃烧稳定性主动控制的基础。
The study on dynamic response of thin-wall structure excited by acoustic loads is the basis to evaluate and design the structure sonic fatigue.
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