Space debris delta-velocity probability density function was deduced by NASA's standard breakup model, and time integral algorithm of collision probability between spacecraft and any debris was built.
推导了基于NASA标准解体模型的碎片分离速度概率密度函数，建立了计算航天器与单颗碎片碰撞概率的时间积分算法。
The breakup point of solid bed using the results calculated from the penetration model and solid bed strength curves accorded with the actual situation.
研究表明，渗流对固体床强度具有削弱作用，固相破碎发生在固-液界面处。应用渗流模型计算得到的固相破碎点符合实际情况。
The process of deformation and breakup of the gel particles at pore throat was observed through visual pore throat model;
利用可视化孔喉模型观测凝胶颗粒在孔喉处的变形和破碎过程；
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