The sanddensity 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；
2
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。
3
Because of the high dry density the dynamical strength of silty sand is higher than those of ordinary sands.