| 单词 | mm (millimeter) |
| 释义 | mm (millimeter) One one-thousandth (10-3, or 1⁄1,000) of a meter.Your little fingernail is about 1 mm thick and it grows at a rate of about 1 nm (nanometer) per second. If a nanometer were scaled up to the width of your little fingernail, your fingernail would be about the size of Delaware. See also meter. |
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