“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	upper critical dimension upper critical field upper critical magnetic field upper critical point upper critical solution temperature upper critical solution temperature (UCST) upper crust upper culmination upper cut-off frequency upper Darboux integral upper Darboux sum upper decimal approximation upper density upper derivative upper deviation upper directed upper Dirichlet density upper end upper end of an integral upper envelope upper estimate upper eyelid upper finite group Upper-flow system upper function

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