... distortion measuring instrument 失真度测量仪 distortion measuring set 失真测定器 distortion meter 失真度测定计 ...
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harmonic distortion measuring set [电子] 谐波失真测量设备
isochronous distortion measuring set [自] 等时畸变测试器
telegraph distortion measuring set 电报信号失真测量器
transmission distortion measuring set 传输失真测量仪
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