当物体由一种物理状态变为另一种物理状态时,可能存在一个过渡的转折点,这时物体所处的状态通常称为临界状态,与之相关的物理条件则称为临界条件.解答临界问题的关键是找出临界条件.如:相互挤压的物体脱离的临界条件即为压力减为零,在涉及到弹簧时,由于弹簧的弹力随着形变量的改变而改变,就会出现这种临界情况,现就弹簧的临 When an object changes from one physical state to another physical state, there may be a transitional turning point, when the state of the object is usually called the critical state, the physical conditions associated with it is called the critical condition. The crux of the problem is to find out the critical conditions such as: the critical condition of mutual extrusion of the object is the pressure is reduced to zero, when it comes to the spring, as the spring’s elastic force changes as the amount of deformation changes, it will appear Kind of critical situation, now on the spring