用替代法完成小电容的测量，可以避免不确定因素对电容测量的影响，完成在线小电容的高精度测量。
The measurement of small capacitances by substituting method can avoid the effect of uncertain factors and achieve high precision measurement of on-line small capacitances.
电流测量探头采用自积分的罗柯夫斯基线圈，自积分电阻的电感、电容要尽可能的小，并采用同轴结构。
The Rogowski coil ranged in the same axis was used as current sensor, in which the self-integral resistance should has smaller inductance and smaller capacitance as possible.
变气隙式电容传感器具有灵敏度高、特别适用于微小位移的非接触测量，对被测系统影响小。
Variable-gapcapacitance sensor has high sensitivity, specially applying to non-contact measurement of micro displacement, and slightly affecting the system to be measured.
论述了小深孔内径电容式测量方法的基本原理，设计了电容式深孔内径测量仪测量小深孔孔径系统的总体方案。
The design scheme was also disserted as the system using the capacitance sensor to measure the aperture of small holes.
在此基础上，选择了对地电容电流测量的注入变频信号法，该测量方法具有测量误差小、实时性良好、安全可靠的特点。
On the basis of this, injecting frequency conversion signal method on measuring capacitive current is selected to use here. It is reliable and its error is small, timeliness is good.
在此基础上，选择了对地电容电流测量的注入变频信号法，该测量方法具有测量误差小、实时性良好、安全可靠的特点。
On the basis of this, injecting frequency conversion signal method on measuring capacitive current is selected to use here. It is reliable and its error is small, timeliness is good.
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