in AM, use 美国英语用 millimeter
N-COUNT [num NOUN] 毫米(千分之一米) A
millimetre is a metric unit of length that is equal to a tenth of a centimetre or a thousandth of a metre.
毫米(千分之一米) Word Link | milli ≈ thousandth : milligram, millilitre, millimetre |
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