单词	micromachine
释义	micromachine noun mi·​cro·​ma·​chine ˌmī-krō-mə-ˈshēn  : a device or machine constructed on a microscopic scale The hardest material, and one of the most chemically inert, diamond is extremely difficult to fabricate into electronic devices or micromachines. Physics Today especially : such a device constructed using the techniques of lithography Unlike the way Swiss watches are made, silicon micromachines are built in one piece and ready to go. Their three-dimensional structures are created by stacking up a series of very thin, carefully detailed layers of silicon, each one deposited directly on the layer before. As a final step, acid etches away the in-between "sacrificial" layers to free the moving parts. Doug Stewart Example Sentences Recent Examples on the Web Self-replicating micromachines (not discussed by Feynman) would unleash the magic of exponential growth, opening a new epoch in engineering. Frank Wilczek, WSJ, 25 Apr. 2018 Word History First Known Use 1971, in the meaning defined above
随便看	bank machine bank martin bank money bank night bank of circulation bank of deposit bank of issue bank on bank on or upon bank paper bank pole bank rate bank run bank shot bank statement bank stock bank superintendent bank swallow bank vole bank winding bank-breaker bank-breakers bank-full bank-wound banka

英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。