physical quantity the value of which is subject to change and can usually be measured Note 1 to entry: The term "variable" alone is frequently used to circumvent the lengthy but correct designation "variable quantity". Note 2 to entry: See also IEC 60050-112:2010, 112-01-01. Note 3 to entry: This entry was numbered 351-21-01 in IEC 60050-351:2006.
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