波动中各质点的机械能不守恒陕西省水利学校杨卫社在机械振动和机械波这部分知识的学习过程中，许多学生往往对机械波与简谐振动中的能量关系混淆不清，认为波动过程中各质点都在做街谐振动，因而它们的机械能都守恒．造成这一错误的主要原因是学生学习商断振动在先，而且... The mechanical energy of each particle in the fluctuation is not conserved. In the learning process of mechanical vibration and mechanical wave in this part of knowledge of Shaanxi Provincial Water Conservancy School Yang Weishe, many students often confuse the energy relationship between mechanical wave and harmonic vibration, and think that every particle in the process of fluctuation is In doing street resonance, their mechanical energy is conserved. The main reason for this error is that students learn to break the vibration first, and...