Right.and in case of caveins.
对啊 用来防止陷落。
Right. and in case of caveins.
对啊 用来防止陷落。
Local media said the cavein may have been sparked by work on an underground train line, though authorities could not confirm this.
洞窟的南壁彩绘了释迦牟尼的两个大弟子即阿难和迦叶。
Cavein Mishap Analysis of a Steel Structure Work at a Factory in South Henan
豫南某厂钢结构工程倒塌事故分析
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