Only is its angular displacements small enough, the motion of three-wire pendulum just has the characters of harmonic vibration.
只有当它的最大角位移足够时，三线摆的运动才具有谐振动的特征。
Only is its angular displacements small enough, the motion of three-wire pendulum just has the characters of harmonic vibration.
只有当它的最大角位移足够时，三线摆的运动才具有谐振动的特征。
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