单词 | metallograph |
释义 | metallograph/ˈmɛtələ(ʊ)ɡrɑːf/ /ˈmɛtələ(ʊ)ɡraf/noun An optical instrument for conducting research in metallography; a metallographical microscope; (occasionally) a photographic image produced by such an instrument. OriginLate 19th century (in an earlier sense). From metallo- + -graph, after metallography. |
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