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

单词	primary standard of angle metrology
释义	primary standard of angle metrology Encyclopedia 工学角度计量基准释 primary standard of angle metrology角度计量基准为几何要素间夹角及空间姿态角角度提供参考量值，具有最高的计量学特性的测量标准。
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