“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	grinding medium grinding mills grinding of cement grinding process Grinding the Tea grinding wheel safety grinding wheel wear grindstone grind with water G-ring Griot gripper-projectile loom gripper-shuttle loom gripper structural optimization technology griseofulvin grism grism, grating-prism grism spectrograph Grisogono Grissom crater grit Grito de Lares grivation Grizzly Man G. R. Kirchhoff

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