什么是“Potential Energy"啊?

什么是“Potential Energy啊? 什么是Potential Energy（PE)?什么是Potential Energy?请举几个例子. potential energy是什么意思 electrical potential energy是什么意思 Lattice energy 和 potential energy 的联系和区别 describe the difference between potential energy and kinetic energy(use examples) potential What differences between Gravitational Potential Energy and Potential Energy?如题,中文意思是——势能和重力势能有什么区别?势能=Potential Energy （简称PE）重力势能=Gravitational Potential Energy （简称GPE）根据这 关于gravitational potential energy 的理解Gravitational Potential EnergyThe general expression for gravitational potential energy arises from the law of gravity and is equal to the work done against gravity to bring a mass to a given point in spa energy energy Energy 物理中的势能（Potential Energy）是物体由于位置或位形而具有的能量.还有系统 there are potential health risks ____ energy drinksa.linked to b.links with c,linking to d.links 英语翻译In very general terms,an emf is a potential difference,and that is a potential-energy difference per unit charge.A potential-energy difference per unit charge coresponds to work done per unit charge,which is force per unit charge times di 发电厂是如何保存电能的?是用什么来保存电能的 potential energy（U）是不是最初始的能量啊?再转换成ac dc什么的 如果可以的话能不能简单的解释一下potential energy到底是什么 kinetic energy跟potenti 重力势能与引力势能的英语不会是一样都叫gravitational potential energy吧?总有什么区别吧? 物理elastic potential energy问题Ep=1/2kx2.怎样来的?我看不懂,解释后给我一些例子,