With this filter , the signal - to - noise ratio of a MCG is improved to the intrinsic noise level.

利用它可以使心磁信号的信噪比提高到器件的本徵噪声水平.

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High efficiency and low noise with horizontal or vertical fan discharge, rotary or scroll compressors.

高效率和低噪声水平或垂直范放电, 旋转或涡旋压缩机.

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Built - in anti - resonance isolation system to reduce vibration and noise levels with good results.

内建的 反谐振 隔离系统对降低振动和噪声水平产生良好效果.

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The internal noise level becomes the important index of weighing the grade level of the automobile.

车内噪声水平成为衡量汽车档次高低的重要指标.

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The result of experiment is excellent, the signal - noise rate is high and the system is effective.

实验结果良好, 电路噪声水平与动态范围满足要求,系统可行.

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For a conventional helicopter, the tail rotor is one of primary sources for helicopter noise.

尾桨是直升机的主要噪声源, 降低尾桨噪声对控制直升机的噪声水平具有重要意义.

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