The sand density distribution inside the?'mould'after shooting has been calculated.
本文利用两相流理论模拟出射砂预紧实后的密度场分布；
By making small circles with each part of your body, water is re-introduced between the sand and clay particles, reducing the density and making it easier for someone to heave you out.
全身小幅度转圈，水会重新流入沙和粘土颗粒之间，从而减小流沙密度，让别人容易将你拉出来。
Because of the high dry density the dynamical strength of silty sand is higher than those of ordinary sands.
试验得到粉砂的动强度高于一般砂性土，主要是因为制样控制干密度比较大。
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