["About Measurement Units"]
Abstract：["The \u0027People\u0027s Republic of China Metrology Law\u0027 enacted on September 6, 1985, stipulates: \u0027The state adopts the International System of Units. The International System of Units and other selected units by the state are the legally recognized units of measurement. Non-state units of measurement shall be abolished.\u0027","The commonly used international base units and their symbols in this journal: the unit of length is \u0027meter\u0027, symbolized as m; the unit of mass is \u0027kilogram\u0027, symbolized as kg; the unit of time is \u0027second\u0027, symbolized as s (not sec); the unit of amount of substance is \u0027mole\u0027, symbolized as mol."]
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Publication Date：2025-07-20
Online Publishing Date：2025-08-21(First online date of this platform, not the publication date of the document)
Pages：1( 636 )