“primary standard of length”的概念、定义、翻译、参考文献-科学参考

单词	primary standard of length
释义	primary standard of length Encyclopedia 工学米定义释 primary standard of length长度计量基准以现代科学技术所能达到的最高准确度保存和复现长度单位“米”的整套装备。
随便看	one-component system one-connected one-connected domain one-connected manifold one-connectedness one-connected space one country, two systems one-cycle One day in China One Day in the Life of Ivan Denisovich one-diemsional steady pipe flow one-dimensional one-dimensional aperture synthesis one-dimensional boundary-value problem one-dimensional chain one-dimensional character one-dimensional classification one-dimensional conductor one-dimensional conductors one-dimensional continuum one-dimensional crystal One-dimensional Detonation Wave Model one-dimensional distribution one-dimensional equation one-dimensional foliation

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