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

单词	primary standard of line angle
释义	primary standard of line angle Encyclopedia 工学角度计量技术释 primary standard of line angle线角度计量基准统一全国线角度量值的国家标准。又称圆分度基准装置。
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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。