electro kinetic potential

例句：

1. 1.The electric field is responsible for the movement of electrons in an atom.
   电场负责原子中电子的运动。
2. 2. The potential energy of a falling object is equal to its mass times the acceleration due to gravity.
   下落物体的势能等于其质量乘以重力加速度。
3. 3.The potential energy of a spring is directly proportional to its length and inversely proportional to its mass.
   弹簧的势能与其长度成正比，与其质量成反比。