The random profile graph experiment has demonstrated the waveform measured by the piezoelectricpickup that can really reproduce the profile of roughness surface.
随机轮廓图形实验，验证了压电传感器测得的波形能真实地复现表面特征的实际轮廓。
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Compared with piezoelectric ceramic vibration pickup or inductance vibration pickup, this vibration pickup has higher sensibility, more widely frequency response.