Sensitive Galvanometer, Model J0409, is suitable for the laboratories of middle schools and polytechnic schools to measure small electric current and electric potential difference.
J0409型灵敏电流计适用于中学、中专等实验室测量直流电路中微小电流和微小电势差。
The results showed that moisture content of veneer, the electric potential difference of backing plates and the interaction of them all had significantly effects on adhesive strength.
结果表明：单板含水率和垫板间电势差及其交互作用对胶合强度都有极显著影响。
The relationship and difference between electric potential energy, interaction energy and electrostatic energy are revealed through calculation and discussion of some examples.
通过具体例子的计算和讨论，揭示了静电场中的电势能、相互作用能和静电能之间的联系和区别。
The electric current does not flow if there is not potential difference between the ends of a conductor.
如果导体两端没有电位差，电流就不会流动。
The electric current does not flow if there is not potential difference between the ends of a conductor.
如果导体两端没有电位差，电流就不会流动。
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