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出典:Wiktionary
出典:『Wiktionary』 (2009/06/29 12:44 UTC 版)
circular mil (複数形 circular mils)
出典:Wikipedia
出典:『Wikipedia』 (2011/05/14 11:52 UTC 版)
A circular mil is a unit of area, equal to the area of a circle with a diameter of one mil (one thousandth of an inch). It is a convenient unit for referring to the area of the cross section of a wire or cable as it can be calculated without reference to pi (π).
circular mil