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：2025/11/28
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(physics) Half of the period of a wave etc; typically the time taken for part of a wave to be replaced by a similar part that is out of phase.
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semi-period
The semi-period of the oscillating pendulum determines how long it takes to move from one extreme to the other.
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The semi-period of the oscillating pendulum determines how long it takes to move from one extreme to the other.
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