“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	cake filtration cake number cake-separated moxibustion CAL cal Calabar Calabarzon Region Calabash Brothers calabash city Calabash Nebula Calabi Calabi conjecture Calabi triangle Calabi Yau compactifications Calabi-Yau compactifications Calabi-Yau manifold Calabi Yau manifold with elliptic fibrations Calabi-Yau manifold with elliptic fibrations Calabi-Yau space Calabi-Yau spaces Calabi-Yau theory Calabi Yau variety Calabi-Yau variety Calabria Calabrian Stage

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。