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  • 1. (kg) .: - , (BIPM),, . 1889, . , . . , . , , , , .

2. 1840 (metre, m) (kilogramme, kg) . 1875 17 (Conference Generale des Poids et Mesures, CGPM). (CIPM), . International Bureau of Weights and Measures Svres ( ), 50 . , . 50 gram , , !