频率相同的两列机械波相遇时,使某些区域的振动始终加强,某些区域的振动始终减弱,且振动加强的区域和振动减弱的区域互相间隔,两个区域的位置固定不变,这就是波的干涉现象所产生的稳定干涉图样.需要注意的是振动加强点在任意时刻振幅都是相等的、最大的,但位移是在零和最大值之间做周期性 When two mechanical waves of the same frequency meet each other, the vibration in some areas will always be strengthened, the vibration in some areas will always be weakened, and the areas with strong vibration and the areas with weaker vibration will be separated from each other. The positions of the two areas are fixed, that is It is important to note that the amplitude of vibration enhancement points is equal and largest at any time, but the displacement is periodic between zero and maximum