All was well until last Wednesday, when a crack appeared in the soil causing a small amount of rubble to fall. This was followed by another massive landslip.
而在上周三，地面开始出现裂缝，紧接着的面试大面积的塌陷。
The crack propagation characteristics of X70 pipeline steel in the synthetic soil solution under cyclic loading are investigated.
试验研究了X70管线钢在模拟土壤介质中，循环载荷下的裂纹扩展特性和宏观规律。
The crack propagation characteristics of X70 pipeline steel in the synthetic soil solution under cyclic loading are investigated. The macroscopical rules of the crack propagation are analyzed as well.
试验研究了X70管线钢在模拟土壤介质中，循环载荷下的裂纹扩展特性和宏观规律。
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