1.Borehole hydromining is a kind of safe and efficient new mining method .
钻孔水力采煤是一种既安全、又能极大地提利用率的新的采矿方法。
2.The acoustoelectric effect of rock is investigated with experimental method in model borehole.
在模型井中对岩石的声电效应进行实验研究。
3.It's a mean of geotechnical investigation, including borehole surveying, costeaning, trenching exploration, test pitting, hole exploration, geophysical exploration and penetration sounding.
岩土工程勘察的一种手段，包钻探、井探、槽探、坑探、洞探以及物探、触探等。
4.It is found that the rational located destressing boreholes can induce structural failure of the surrounding rock-mass,consequently the high stress move deeply in the rock-mass,and the stres...
利用率的新的采矿方法。
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。
实验研究。
钻探、井探、槽探、坑探、洞探以及物探、触探等。
岩附近的应力环境,改
