“ultra-precision machining”的概念、定义、翻译、参考文献-科学参考

单词	ultra-precision machining
释义	ultra-precision machining Encyclopedia 工学数字化制造释 ultra-precision machining超精密加工加工尺寸精度达到10纳米，表面粗糙度1纳米，加工的最小尺寸可达1微米的加工工艺。工学超精密加工释 ultra-precision machining超精密加工加工零件的尺寸或形状精度优于100纳米，表面粗糙度Ra小于20纳米的加工技术。
随便看	Emperor Xuanzong of Tang Dynasty Emperor Yan Emperor Yangdi of Sui Dynasty Emperor Yan Mausoleum Emperor Yingzong of Song Dynasty Emperor Yizong of Tang Dynasty Emperor Yizong of Western Xia Dynasty Emperor Yuandi of Liang Dynasty Emperor Yuandi of Wei Dynasty Emperor Yuan of Han Dynasty Emperor Yuan of Jin Dynasty Emperor Zetian of Zhou Dynasty Emperor Zhang of Han Dynasty Emperor Zhangzong of Jin Dynasty Emperor Zhaolie of Shu Han Dynasty Emperor Zhao of Han Dynasty Emperor Zhaozong of Tang Dynasty emperor ZhenYi Gao BaoRong of Nan Ping Emperor Zhenzong of Song Dynasty Emperor Zhenzong of Song Dynasty Shandi Emperor Zhezong of Song Dynasty Emperor Zhi of Han Dynasty emperor ZhongZong LiuSheng of South Han Emperor Zhongzong of Tang Dynasty emphasis of graduate school

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