Description is made on the principle and application result of the short group bolting of slushing roadways in loosened rock.
论述

杆群支护碎裂岩石中耙道的原理及实施效果。
声明:以上例句、词性分类均由互联网资源自动生成,部分未经过人工审核,其表达内容亦不代表本软件的观点;若发现问题,欢迎向我们指正。
之后 | After You (Me Before You #2)
心?