单词	photomask
释义	photomask noun pho·​to·​mask ˈfō-tō-ˌmask  plural photomasks : a pattern of opaque material used to shield selected areas of a surface (as of a semiconductor) in deposition or etching (as in producing an integrated circuit) : mask sense 3d Word History Etymology photo- + mask entry 1 First Known Use 1963, in the meaning defined above
随便看	irrevocability irrevocable irrevocableness irrevocablenesses irrevocably irrevoluble irridenta irridentas irridentisms irridentists irrigable irrigate irrigated irrigates irrigating irrigation irrigation efficiency irrigational irrigationist irrigations irrigative irrigator irrigators irriguous irrision

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