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词汇 mil
词源

mil n.

1721, in per mil "per thousand," from Latin mille "thousand" (see million); compare percent. As a unit of length for diameter of wire (equal to .001 of an inch) it is attested from 1891; as a unit of angular measure it is recorded by 1907.

updated on January 15, 2019

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更新时间:2025/5/2 1:19:04