根据电压补偿原理，设计了自组电位差计的几种实验电路，用于测量干电池的电动势和内阻。
According to the voltage compensation method, several experiment circuits of potentiometer are designed to measure the voltage and the internal resistance of the dry battery.
阐述了不平衡电桥法测量电池内阻的原理，给出实验设计，测量结果与电位差计法相比可提高测量精度。
This paper described a principle of determining internal resistance of the battery by imbalance electric bridge, and presented its experiment design.
详细介绍了直流电位差计测量结果不确定度的分析过程。
Evaluation methods of uncertain degree of measure result of d.
给出了一种利用霍尔效应测量螺线管磁场的新方法：用数字电压表取代电位差计等诸多仪器测量霍尔电势差，进而计算出通电长直螺线管内轴向磁场的分布。
Digital voltmeters, instead of voltage meters and other instruments, are used to measure Hull voltage and then to calculate the axial magnetic induction distribution in charged straight spiral tubes.
给出了一种利用霍尔效应测量螺线管磁场的新方法：用数字电压表取代电位差计等诸多仪器测量霍尔电势差，进而计算出通电长直螺线管内轴向磁场的分布。
Digital voltmeters, instead of voltage meters and other instruments, are used to measure Hull voltage and then to calculate the axial magnetic induction distribution in charged straight spiral tubes.
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