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- Kirchhoff's current Law is applied to describe the relationship of branch currents that flow into or out a same node and it reveals the essential law of conservation of electric charges. 基尔霍夫电流定律用来描述流入或流出同一个节点支路电流的关系；它揭示了电荷守恒定律的本质。
- There are two kinds of electric charges: positive and negative. 电荷有两种：正电荷和负电荷。
- Law of electric charge conservation 电荷守恒定律
- Field Intensity Affecfed by Electric Conductor Ball and Dot Electric Charges by Using the Law of Electricity Image 用电像法研究带电导体球与点电荷作用的场强
- 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。
- law of electric charges 电荷定律
- There are two kinds of electric charge, positive and negative. 电荷有两种，正的和负的。
- The number of electric charges lost or gained by an atom in such a transfer. 电价数，离子价在这样的转移中一个原子失去或得到的电荷数
- A pair of electric charges or magnetic poles, of equal magnitude but of opposite sign or polarity, separated by a small distance. 偶极子一对电荷或磁极，符号或极性相反但数量相等，彼此隔一定距离
- The magnetic field of magnet is the same with the magnetic field of electric current, they all caused by the movement of electric charges. 磁铁的磁场跟电流的磁场一样,都是由电荷的运动产生的。
- We are subject to the law of the land. 我们须遵守当地的法律。
- Langevin is noted for his work on paramagnetism and diamagnetism, and devised the modern interpretation of this phenomenon in terms of electric charges of electrons within atoms. 朗之万以他的顺磁性及反磁性的研究而闻名，他想出了用现代的原子中的电子电荷去解释这些现象。
- Who discovered the Law of Gravitation? 谁发现了引力定律？
- Polarity: (1) A property of electric charges, either negative or positive.(2) A property of a magnetic field, either north pole or south pole. 极性:(1)电荷的一种特性，它不是负电，就是正电。(2)磁场的一种特性，它不是北极，就是南极。
- The law of electric current is that an electric current varies directly as the voltage and inversely proportional to the resistance. 电流定律就是：电流与电压成正比，与电流成反比。
- We often compare the flow of electrical charges to the flow of water. 我们时常把电荷的流动比喻为水的流动。
- Newton's law of motion apply to all things on the earth. 牛顿时的运动定律适用于地球上一切东西。
- Industry is a heavy user of electric power. 工业需耗费大量的电力。
- Enactment into law of a legislative measure. (议案)通过把立法议案制定为法律
- Of or relating to electric charges at rest. 静电的静电的，关于静电的
