The ball which hung the roof is compound pendulum.

悬挂在墙上的钟来回摆动.

《简明英汉词典》

A method to determine the moments of inertia based on compound - pendulum theory was described.

基于复摆原理,提出一种改进的测量转动惯量的方法,设计制作了测试样机.

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More why is the pace that compound pendulum takes off poverty stridden so greatly?

更复摆脱贫困的步伐为何迈得这么大?

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Time dilation effect and the inherent of its mechanisms compound pendulum at relativistic motion are studied.

研究复摆钟在相对论运动下的钟慢效应和复摆钟发生钟慢效应的内在机制.

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