the stability of surrounding rock mass

• 围岩稳定性

the stability of surrounding rock mass的用法和样例：

例句

1. Considering the problems of old models of drift surroundings stability classification, this paper offers a new one.
   在分析以往一些巷道围岩稳定性分类模型存在的不足之处的基础上，给出了一种新的模型。