equipotential line

例句：

1. 1. Theequipotential line is drawnto show the potential difference between two points.
   等势线被画出来以显示两点之间的电势差。
2. 2. Theequipotentialline is used in electrical engineeringto determine the distribution of electric fields.
   等势线在电气工程中用于确定电场的分布。
3. 3. Theequipotentialline is a critical concept inelectrostatics, where it helpsto understand how charges distribute across the surfaceof an object.
   等势线是静电学中的一个关键概念，它有助于理解电荷如何在物体表面分布。