单词	micrometre
释义	micrometremi‧crom‧e‧tre British English, micrometer American English /ˈmaɪkrəʊˌmiːtə $ -kroʊˌmiːtər/ (also mi‧cron /ˈmaɪkrɒn $ -krɑːn/) noun [countable] Word Origin WORD ORIGINmicron Origin: 1800-1900 Modern Latin, Greek, from mikros ‘small’ a unit for measuring length. There are one million micrometres in one metre.
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