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词汇
si units
释义
si units
短语⁹⁰⁸⁸⁷⁺
⁷
基本
例句
标准国际单位制
At the same time, the practice shows that the accuracy of fundamental SI units could be improved further by redefinition of some fundamental physical constants.
同时,实践证明,用固定若干基本物理常数的数值来重新定义基本单位,可以进一步提高基本单位的准确性。
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更新时间:2026/6/21 9:48:26