| 单词 | free oscillation | 
| 释义 | free oscillationnoun1   : the oscillation of a body or system with its own natural frequency and under no external influence other than the impulse that initiated the motion  called also free vibration—opposed to forced oscillation 2   : damped alternating current produced by an electric impulse in a circuit but flowing while no external electromotive force is being applied   | 
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