rock ore的意思|示意

Class B: areal geology survey; rock ore appraisal and testing.

乙级：区域地质调查；岩矿鉴定与岩矿测试。

Class c: geophysical exploration; rock ore appraisal and testing.

丙级：地球物理勘查；岩矿鉴定与测试。

Class c: solid mineral exploration; rock ore appraisal and testing.

丙级：固体矿产勘查；岩矿鉴定与岩矿测试。

Because of these problems such as unstable ore bodies, moderately-stable wall rock, large work-out area, the design proposal of mining these ore bodies by filling-up method is presented.

针对其矿体不稳固、围岩中等稳固，以及存在较大采空区，矿体完整性遭破坏的情况，提出了上向进路充填法开采的设计方案。

There is less natural sulfide deposits are mainly conferred altered rock type gold ore, the uneven distribution of natural gold.

自然金主要赋存在少硫化物蚀变岩型金矿石中，自然金分布不均匀。

Escondida means "hidden" in Spanish, and it refers to the fact that the copper ore body was buried beneath hundreds of meters of barren rock, and the surface geology gave no signs of its presence.

埃斯康迪达在西班牙语中有“隐藏”的意思，正暗示了铜矿的矿体埋藏在废石层下几百米深的地方，而从地表却一丝痕迹也看不出来。