“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	National Electronic Records Administration Joint Inter-ministry Conference national emblem National Emblem of Australia National Emergencies Act national emergency industry demonstration base national emergency management information system national emergency management information system, NEMIS national emergency plan for geological disasters National Endowment for the Arts National Energy Program National Engineering Lab. for Chemical Utilization of Biomass National Engineering Research Center for Information Technology in Agriculture National Engineering Research Center of Chemistry of Forest Products National Engineering University of Peru National Entrance Test of English for MA/MS Candidates National Environmental Policy Act of 1969 National Environmental Policy Act of the United States of America National Environmental Protection "12th Five-Year" Program Environment and Health Work Plan National Environmental Protection "12th Five-Year" Science and Technology Development Planning national environmental protection model city system national environmental protection pilot city national environmental standards national epic national equality national ethic

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