哈密顿力学的目标是用广义动量(也称为共轭动量)变量取代广义速度,线性动量,角动量,
回答: wave3:力本身是如何随时间空间改变的,以及力的改变是如何随时间改变的....当然这就是你们说的三次及高次导
由 marketreflections
于 2011-07-11 15:15:44
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