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

单词	primary standard of flatness
释义	primary standard of flatness Encyclopedia 工学平面度测量释 primary standard of flatness平面度计量基准国家平面度计量器具的最高标准。所复现的量值通过计量标准器具向使用中的工作计量器具进行量值传递，以保证平面度量值的统一。工学形状误差计量技术释 primary standard of flatness平面度计量基准国家平面度计量器具的最高标准。
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