在一定的应力水平下处于变形稳定状态的湿陷性黄土，当只增大应力水平或其含水量时，二者都会出现变形增大甚至强度破坏现象。
Loess in a steady of deformation at a certain stress level, when the stress or its water content is increased, the deformation of loess will increase, or even loess will be failed.
研究结果表明随着跌落高度、跌落次数的增加，苹果冲击力、加速度峰值、冲击最大变形、冲击结束后的残余变形逐渐增大。
Results show that with the increase of dropping height and repeated impact, the impact force, peak acceleration, maximum deformation and remaining deformation of apple increase.
试验表明，颗粒破坏的数量随着剪切变形和侧限压力的增大而增多，与试样的初始密度却无直接关系。
It was found that the amount of the grains broke increased with the shear strain and confining pressure, independent of the initial density of the specimen.
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