各教材都强调势能属于保守力做功的物体系统,由物体间的相对位置决定.本文指出了势能还与物体系中各物体的个体特征有关. Each teaching material emphasizes that the potential energy belongs to the system of the object which is a conservative force, which is determined by the relative position of the objects.The paper points out that the potential energy is also related to the individual characteristics of the objects in the system.