conservative force field

基本解释

Our main concern so far has been to say if we have a conservative force field it means that the work of a force is the change in the energy.
目前爲止，我們主要關心的是,如果在保守力場中,力所做的功是，能量的改變。
So, what that means concretely is if you have a force field that conservative, then you cannot build somehow some perpetual motion out of it.
具躰來講,如果你有一個保守力場，就不可能建立起永恒的運動。
The article proceeds from the characteristic of doing work of electrostatic field strength and proves that electrostatic field is a conservative force field.
文章從靜電場力作功的特點出發，說明靜電場是保守力場。