Some mistaken viewpoints were clarified, and requirements on covariability of conservation law were studied deeply.
从一道力学试题出发，讨论了机械能守恒的条件，并深入研究了守恒规律的协变性要求。
Some mistaken viewpoints were clarified, and requirements on covariability of conservation law were studied deeply.
从一道力学试题出发，讨论了机械能守恒的条件，并深入研究了守恒规律的协变性要求。
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