apparent porosity and bulk density 显气孔率和体积密度
The result shows that the compressive strength at normal temperature of impregnated samples is raised in varying degree, their bulk density is increased and the porosity is decreased.
制得高强度耐火粘土砖的试验结果表明：浸渍处理后的试样，常温耐压强度均获得了不同程度的提高，体积密度增加，气孔率下降。
Experiments show that the accurate equation can express the relationship of porosity and bulk modulus of porous medium well.
试验结果表明，精确公式能够很好地表达多孔介质孔隙率与体积模量之间的关系。
An amende nt should decrease bulk density increase toltal porosity and incr ease water and air content.
改良剂能降低容重，增加总孔隙度，增加水和空气的含量。
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