怎样用阿基米德法测孔隙率？

公式：

补充：

孔隙率指散粒状材料堆积体积中,颗粒之间的空隙体积所占的比例。

它以P′表示。空隙率P′的计算公式为:

P′--材料空隙率，%;

V0--材料的自然堆积体积，cm或m;ρ0为材料堆积密度，g /cm或kg/ m;

V--材料的颗粒体积，cm或m;ρ为材料表观密度，g /cm或kg/ m。

 The dimensions of the specimen were measured using a Vernier callipers to produce a total volume (V) of the scaffold. The dry weight (mdry) measured with an analytical balance. And then the stuff was dipped into in deionized water and suspended