驻波是两列传播方向相反等幅的波叠加而成的 其特征二是____ . Standing wave is the superpositi
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驻波是两列传播方向相反等幅的波叠加而成的，其特征二是____ . Standing wave is the superposition of two columns of waves of equal amplitude in opposite directions of propagation.
A．一个波节两侧的质元振动具有相同的振幅； The vibration of the mass element on both sides of a node has the same amplitude;
B．一个波节两侧的质元振动具有相同的相位； The vibration of the mass element on both sides of a node has the same phase;
C．一个波节两侧的质元振动具有相反的相位； The vibration of the mass element on both sides of a node has opposite phase;
D．一个波节两侧的质元振动具有不同的频率； The vibration of the mass element on both sides of a node has different frequencies;
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