噪声传感器;
It is important to connect the transducer and amplifier by a lowcapacitance , low-noise, coaxied cable.
传感器和放大器之间的联结采用低容抗, 低噪音的同轴电缆是很重要的.
The distance between the acoustic-emission source and the receiving transducer, and the background noise level are primary factors in selecting a particular frequency band.
声发射源与接收讯号传感器间的距离以及环境噪声的电平是选择频带的主要依据。
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