发布时间:2025-02-05 21:02:09
m=ρv=2.7×10^3kg/m^3×65×150×3cm^3=2.7g/cm^3×29250cm^3=78975g=78.975kg
我是做建筑材料检测的刚入行现在做防水涂料检测单组份聚氨酯防水涂料的制样涂料的稠度很大无法涂
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