它的名字和国际单位中表示基本聚合物质质量千克有关。
The name is a reference to International Prototype kilogram, as a base unit of mass in the International System of Units.
在物理学上，是以每单位体积的质量来鉴别物质。
In physics it is an identification of material by noting its mass per unit volume.
在特定压力和温度条件下某物质单位体积的质量。
The mass per unit volume of a substance under specified conditions of pressure and temperature.
最重要的定义是摩尔的介绍，一个用来描述物质质量的国标单位之一。
Thecalculation of them is the most important part. Then introduced the new unit'mole', which is used to described the amount of substance.
最重要的定义是摩尔的介绍，一个用来描述物质质量的国标单位之一。
Thecalculation of them is the most important part. Then introduced the new unit'mole', which is used to described the amount of substance.
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