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在物理学中先建立物理模型,然后在一定条件下,用于处理某些实际问题。物理模型是在抓住主要因素忽略次要因素的基础上建立起来的,它能具体、形象、生动、深刻地反映事物的本质和主流。
In physics, a physical model is built first and then used to deal with some practical problems under certain conditions. The physical model is established on the basis of grasping the major factors and neglecting the secondary factors. It can reflect the essence and mainstream of things in a concrete, vivid and vivid way.