One millionth of a metre; = micrometre, n. Symbol μ or μm.
| 单词 | θ117107 |
| 释义 | the world > relative properties > measurement > measurement of length > [noun] > units of length or distance > metre > the millionth part of a metre (4) micron1879 One millionth of a metre; = micrometre, n. Symbol μ or μm. micrometre1880 A millionth of a metre; = micron, n. Symbol μm. mu1888 Science. One micrometre (micron). Usually written μm or μ. mikrom1898 = micron, n. |
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