This Capacitance evenness testing method is used widely, but the results obtained by it have a certain error.
电容测试方法应用广泛，但测试结果有一定误差。
The measuring principle of metal surface roughness by capacitance method is discussed and the block diagram of measuring instrument and testing results are given.
本文论述了电容法测量表面粗糙度的原理，给出了测量装置的框图和实验结果。
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