Experimental results show that the material is at the stage of damage or the transition stage from damage to void collapse under these impact velocities.
研究结果表明，在此冲击速度下，材料处于损伤状态和由损伤状态向孔洞崩塌过渡阶段。
Simply stated, when buildings collapse, the weight of the ceilings falling upon the objects or furniture inside crushes these objects, leaving a space or void next to them.
简略地说，当建造物倒塌时，落在物体或家俱上的屋顶的重力会撞击这些物体，使得凑近它们的处所留下一个空间。
Simply stated, when buildings collapse, the weight of the ceilings falling upon the objects or furniture inside crushes these objects, leaving a space or void next to them.
简单地说，当建筑物倒塌时，落在物体或家具上的屋顶的重力会撞击这些物体，使得靠近它们的地方留下一个空间。
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