High resistance measurements using the constant-current method may be made using either an electrometer voltmeter and current source or just an electrometer ohmmeter. 采用恒流法,可以使用静电计电压表和电流源或者只使用静电计欧姆计来测量高电阻。
Combined Type High Resistance Box and High Voltmeter Calibration Equipment 组合式高阻箱及高压表检定装置