“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	Chang Jiang Changjiangcun Changjiang Daily Press Group Changjiang Distinguished Professor Changjiang Lizu Zizhixian Changjiang motorcycle Changjiang Qu Changjiang River diluted water Changjiang River Scientific Research Institute Changjiang Sanjiaozhou Changjiang Sanjiaozhou Chongji Pingyuan Chang Jiang Scholars Program Changjiang Tunnel in Shanghai Changjiang Water Resources Commission of the Ministry of Water Resources Changjiang Zhongxiayou Pingyuan Changjiang-Zhuzhou-Xiangtan Guojia Zizhu Chuangxin Shifanqu Changjiang-Zhuzhou-Xiangtan Liangxing Shehui Zonghe Peitao Gaige Shiyanqu Changjiang（Yangtze）River Three Gorges Hydroproject Chang Jianjun Changjia Quan Changjia Zhuangyuan Changji Huizu Zizhizhou Chang Jin Chang Jing Chang Jingzhi

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