机械振动是一种比较复杂的运动,其中涉及的概念也多,而这些概念的物理含义学生们早已比较清楚.但其中的位移概念却让人感到别扭,因为它与以前定义的位移概念明显有冲突,所以,教师每讲到这一章时都要再三强调:①机械振动中的位移特指振子对平衡位置的位移,即默认以平衡位置为振 Mechanical vibration is a relatively complex movement. There are many concepts involved, and the physical meaning of these concepts has long been clear to students. However, the concept of displacement in it is awkward, because it is obviously related to the previously defined concept of displacement. Conflict, therefore, every time the teacher talks about this chapter, it must be emphasized again and again: 1 The displacement in the mechanical vibration refers specifically to the displacement of the vibrator to the equilibrium position, ie, the vibration is assumed to be the equilibrium position by default.