所谓叠加,狭义地说就是合成。中学生比较熟悉的如力的合成和电场、磁场的合成等即为典型的实例。当然还包括十分熟悉的在研究一个复杂运动时,将它看作是由几个简单分运动的合成等情形。但广义来说,叠加应该比合成更能正确反映物理问题的本质,如不带电的部分可以看作是带等量正电荷和等量负电荷叠加的结果,这时如果硬要说这就是合成,理解起来就有点困难。还有像导体处于静 The so-called superposition, narrow sense is the synthesis. Secondary students are more familiar with the strength of the synthesis and electric field, magnetic field synthesis is a typical example. Of course, it also includes the well-known case of studying a complex movement as a combination of several simple sub-movements. However, in a broad sense, the superposition should reflect the essence of the physical problem more correctly than the synthesis. For example, the uncharged part can be regarded as the result of adding the same positive charge and the same negative charge. If this is the case, Understand it a bit difficult. Still like the conductor is still