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SI unit comparison table
Subject has equivalent has base unit has unit has definition has symbol is a kind of is an instance of is a unit of
base SI unit   a unit assumed to be mutually independent from which all other units are derived SI unit  
derived SI unit defined in terms of the seven SI base units via a system of quantity equationsdefined in terms of derived SI unit via a system of quantity equations  SI unit  
pascal10-5 barsm-1·kg·s-2N·m-2The derived SI unit of pressure.Pa named derived SI unitpressure

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