“动量矩守恒”的概念、定义、翻译、参考文献-科学参考

单词	动量矩守恒
释义	动量矩守恒 Encyclopedia 理学动量释 conservation of moment of momentum动量矩守恒质点系不受外力作用或外力对某固定点的主矩为零时，质点系对此固定点的动量矩保持不变（为常矢量）的现象。又称角动量守恒。理学﹝质点系动力学﹞释 conservation of moment of momentum动量矩守恒质点系不受外力作用或所受全部外力对某定点或定轴的主矩始终等于零时，则质点系对该点或该轴的动量矩（即角动量）保持不变，又称角动量守恒。
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