In composite system filled with solid and solid liquid phase, rational particle grade improve particles arrangement closer and increase stacking density.
在固液相填充复合体系中，采用合理的颗粒级配可使颗粒排列更加紧密，提高堆积密度。
Based on stress and cavity relationship of particles in gas-solid two phase flow field, quantitative correlation of pressure and density of pyrotechnic charges was deduced.
利用气固两相流颗粒间应力与空隙率之间的定量关系，推导了火工药剂压药压力与装药密度之间的定量关系。
The solid-free organic salt solution is applied to based-phase for work fluids because of their adjustable density, low viscosity, and strong inhibition and so on.
由于有机盐无固相水溶液密度可调范围大、溶液粘度低、抑制性强等特点，得以作为油气井工作液的基液在钻井、完井、试油等作业中推广应用。
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