CM has various meanings in the Discovery category. Discover the full forms, definitions, and usage contexts of CM in Discovery.
A measurement used in determining the area of a wire. The area of a circle one one thousandth inches in diameter. Or A unit of area used in measuring the cross section of fine wire. 1 circular mil corresponds to the area of a circle whose diameter is equal to one-thousandth of an inch. 1 circular mil = 0.506710-9 m2
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