您要查找的是不是：
- The principle that the total electric charge of a system remains constant despite changes inside the system. 一个系统即使内部改变,其总电荷保持不变的原理。
- total electrical charge 总电荷
- Magnetism produced by electric charge in motion. 电磁性由运动电荷引起的磁性
- An electrical charge produced by friction between two objects. 摩擦电由两个物体摩擦产生的电荷
- Electrostatics refers to stationary arrangements of electrical charge. 静电指的是电荷的静止分布。
- What is needed for electrical charges to flow? 电荷流动需要什么条件?
- Cause formation of a net electrical charge in or on (a conductor,for example). 使电流形成（例如在导线上）。
- High voltage panels are products of Westinghouse (USA) while low voltage ones are those of Merlin Gerin (France). And, total electrical load is 8900KW. 高压柜采用美国西屋公司产品，低压柜采用法国梅兰日兰公司产品，总电力负荷8900KW。
- Scientists have proved that a complete atom has no electrical charge. 科学家证明一个完整的原子不带电荷。
- No other kind of electric charge has been found. 到现在为止，还没发现其他种类的电荷。
- High voltage panels are products of Westinghouse( USA) while low voltage ones are those of Merlin Gerin( France). And, total electrical load is8900 KW. 高压柜采用美国西屋公司产品，低压柜采用法国梅兰日兰公司产品，总电力负荷8900KW。
- To produce electric charge on or in(a conductor). 使带电使（一个导体）带电或起电
- Freud thought of cathexis as a psychic analog of an electrical charge. Freud认为性欲发泄是同电荷释放类似的精神现象。
- The electrical charge of protons,neutrons and electrons are different. 质子、中子和电子所带的电荷并不相同。
- When a substance has no net electrical charge, the total numbers of positive and negative charges within it must just be equal. 当物质没有净电荷时，它内部的正负电荷总数必定正好相等。
- An atom or a group of atoms that has acquired a net electric charge by gaining or losing one or more electrons. 离子由获得或失去一个或更多的电子而获取了一个净电荷的一个原子或一组原子
- In the method, integro-differential equation for the total electric field is used. 该方法采用以总电场为未知函数的微积分方程。
- The function magnetic field impose on the electric charge. 磁场对运动电荷的作用洛伦兹力。
- Electric charges work when they move. 当电荷运动时，就做功。
- The action had already plunged huge segments of the state into total electric blackout. 这一行动使本州大片地区陷入全面停电。
