不同密度、不同加载方式、循环加卸载下做了实验，进行了详细地分析与总结。
Som experiments, diversity loading ways and diversity density and cycle loading, are done in this paper.
在相同位移速率和相同载荷水平条件下，同一次循环时岩石变形曲线的加载段与卸载段的相应拟合参数值不同。
The imitational parameters are different for loading section and unloading section of the fine-sandstone deformation curve at the same circulate curve under the same deformation-rate and stress-level.
同一循环中的加载与卸载曲线基本不重合，且多数情况不形成闭合环路；
The loading curves of coal-rock combination body are usually not coincidence with the unloading curves. In addition, they usually do not form a closed loop.
通过丰浦砂的平面应变循环加载试验，分析砂土在加–卸载条件下相应的黏性特征。
Based on a series of plane strain cyclic tests on air-dried Toyoura sand, the viscous properties of sand under loading-unloading conditions are presented.
其次，对三城目安山岩和稻田花岗岩在恒定速率下进行循环加载卸载试验，得到了应力—应变曲线上很多点处的卸载曲线。
Next, unloading-reloading cycles are repeated in constant loading rate test with Sanjome andesite and Inada granite; and unloading curves at many points along stress-strain curve are obtained.
其次，对三城目安山岩和稻田花岗岩在恒定速率下进行循环加载卸载试验，得到了应力—应变曲线上很多点处的卸载曲线。
Next, unloading-reloading cycles are repeated in constant loading rate test with Sanjome andesite and Inada granite; and unloading curves at many points along stress-strain curve are obtained.
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