题目内容
In the simple harmonic motion, the time to complete one oscillation is called the period.
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In the simple harmonic motion, the time to complete two oscillations is called the period.
In the simple harmonic motion, the time to complete three oscillations is called the period.
In the simple harmonic motion, the number of cycles per second is called the frequency.
Phase reflects the oscillatory state--vibrating position and direction.
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