difference frequency circuit
difference frequency circuit
差频电路
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The structure, working principle, measuring circuit and frequency characteristics of contact potential difference nondestructive testing equipment using fixed probe am intro - duced.
介绍了接触电位差法固定探头式无损探伤装置的结构，工作原理，测量电路及其频率特性。
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