law of conservation of matter [化学] 物质守恒定律 ; 物质不灭定律 ; 物质守恒定棒 ; 质量不灭定律
同义词： conservation of mass law of conservation of mass law of conservation of matter
以上来源于: WordNet
Conservation of matter and energy in the universe.
宇宙的物质和能量守恒。
For example, no matter how much a dancer wishes to leap off the floor and then start turning, the law of conservation of angular momentum absolutely prevents such a movement.
例如，无论一个舞者多么想要跳离地板，然后开始旋转，角动量守恒定律绝对阻止这样的动作。
You see it on the general exams for physics, and it's simply a matter of conservation of mechanical energy.
你会在一般的，物理考试中见到，这只是一个，机械能的问题。
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