“national prototype of the kilogram”的概念、定义、翻译、参考文献-科学参考

单词	national prototype of the kilogram
释义	national prototype of the kilogram Encyclopedia 工学质量计量技术释 national prototype of the kilogram1千克质量基准砝码中国在1965年从国际计量局得到砝码器号是60号的国家千克原器。
随便看	weakly-chained diagonally dominant matrix weakly closed weakly closed algebra weakly closed space weakly closed subset weakly -compact weakly compact weakly compact operator weakly compact set weakly compact space weakly comparable functions weakly complemented lattice weakly complemented subspace weakly complete weakly complete manifold weakly complete sequence weakly complete space weakly complex manifold weakly conformal mapping weakly connected weakly connected component weakly connected digraph weakly consistent estimate weakly consistent estimator weakly -continuous

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