但这种传感器的准确性受连接导线分布电容和温度的影响较大，从而制约了电容式油量表测量精度的提高。
But the distributed capacitance of connecting wire and the temperature have a bigger effect on the accuracy of this kind sensor, the increase of the sensor's precision was constrained.
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。
The measuring principle of metal surface roughness by capacitance method is discussed and the block diagram of measuring instrument and testing results are given.
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