[DOC]
系统的内力是弹性力
回答: 拉普拉斯早先在其研究中证明,如果引力相互作用不是超距的(即传播是瞬时的),行星的运动将不再严格满足动量守恒定律(类似于电磁相互作
由 marketreflections
于 2011-03-24 14:31:32
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