“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	distance method distance metric distance modulus distance of celestial bodies distance of distinct vision distance of parallelism distance of support distance point distance-preserving mapping distance protection distance race of Summer Deaflympics distance race of Summer Special Olympics distance-redshift relation distance regular graph distance-regular graph distance scale distance sense of color distance space distance sphere distance structure distance sum structure distance symmetric distance theodolite distance to default distance transform

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