... Covar柯伐合金 covariability协变性 covariance协变性 协方差 ...
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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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