在ASTMD244中，密度杯为已知容积的不锈钢制标准容器，却没有具体的几何形状及尺寸；
In ASTM D244, the density cup is a stainless steel measurer of known standard volume, but the shape and the dimension was not presented.
在ASTMD244中，密度杯为已知容积的不锈钢制标准容器，却没有具体的几何形状及尺寸；
In ASTM D244, the density cup is a stainless steel measurer of known standard volume, but the shape and the dimension was not presented.
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