bn:02043788n
Noun Concept
PT
unidade básica do SI  SI unidade de base  unidade básica do Sistema Internacional  unidades básicas do SI  unidades de base SI
EN
The SI base units are the standard units of measurement defined by the International System of Units for the seven base quantities of what is now known as the International System of Quantities: they are notably a basic set from which all other SI units can be derived. Wikipedia
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