“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	similarly situated figures similar mappings similar matrices similar matrix representation similar operators similar ordered set similar permutation similar permutation groups similar permutation representation similar permutations similar polygons similar position similar projective representation similar quadratic form similar quadrature fomulas similar radicals similar region similar relational algebra similar relations similar representation similar ring elements similar sets similar statistic similar structure similar surds

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