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新颁发的砝码检定规程(JJG-81)规定:“一等砝码采用真空质量值,二等砝码至五等砝码一律采用折算质量值。”并根据折算质量的定义,给出了砝码折算质量值m~*与真空质量值m之间的折算公式为:式中,ρ—砝码的材料密度,单位为
The newly issued test code of weight (JJG-81) stipulates: “First-class weight adopts vacuum mass value, second-class weight to fifth-class weight adopts converted mass value.” According to the definition of conversion quality, The weight conversion mass m ~ * and the vacuum mass value m between the conversion formula is: Where, ρ- weight material density, in units of