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.
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