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Long long ago, we knew the periodic motion of a planet.

很久以前, 我们就知道行星的周期运动.

《简明英汉词典》

The harmonic oscillator is an exceptionally important example of periodic motion.

谐振子在周期运动中是特别重要的.

辞典例句

The periodic motion is considered for an impact oscillator with damping.

本文研究一类带阻尼的碰撞振子的周期解及其稳定性.

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Be this kind of relation and its motion, brought about the periodic motion of real economy.

正是这种关系及其运动, 导致了现实经济的周期性波动.

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Speed - gradient adaptive control method is used to direct chaotic motion to a periodic motion.

采用速度梯度自适应控制方法,使其从混沌运动返回到周期运动.

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