electric line of force [电] 电力线 ; 电场线
An electric line of force is also a closed line; it too forms a loop and returns on itself.
电力线也是一条封闭线；它形成一个圈，返回原处。
Traveling-wave interaction and secondary magnetic field is generated electromagnetic force, which is a straight line to run the basic principles of electric motors.
行波磁场与次级相互作用便产生电磁推力，这就是直线电动机运行的基本原理。
The general definition of the line of electric force and the universal properties drawn from the chart of the line of electric force conform to any types of electrostatic field.
电场线的一般定义及从电场线图归纳的普遍性质符合各种静电场。
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