And so there are only two kinds of waves that can exist on this violin string, standing or traveling.

由于这只有两种波，可以存在在这条弦上，驻波或行波。

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It has been proved mathematically, that the string vibration will forms standing waves if its Uper end is fixed while lower end moves round a circle.

从数学上证明了上端固定，下端作圆周运动的弦振动是驻波。络纱时产生的退绕气圈也是这种形式的驻波。

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And so there are only two kinds of waves that can exist on this violin string, standing or traveling.

由于这只有两种波,可以存在在这条弦上，驻波或行波。

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