A second form involves technology used for exploration boreholes in the hard rock mining industry.
小井眼的第二种形式包括使用了在采矿工业中使用的硬岩石中的勘探技术。
At least 3,350 active mining claims exist for all types of hard-rock exploration within the area.
目前至少有3350个活动的采矿队正在这一地区寻找重金属矿脉。
At least 3, 350 active mining claims exist for all types of hard-rock exploration within the area.
目前至少有3350个活动的采矿队正在这一地区寻找重金属矿脉。
The paper describes a waterjet-aided drill which, successfully developed by Changsha Institute of Mining Research, is useful in laboratory and capable of drilling holes both in soft and hard rock.
本文介绍了长沙矿山研究院研制成的一种实验室用并适用于钻凿软至硬岩孔的连续水射流钻机及与其相适应的两种新型水力-刮刀钻头。
In deep mining, rock changes from hard to soft, from solid to liquid.
深部开采，岩石由硬变软，由固变流。
By analyzing the technical flow of pithead heap-leaching uranium deposits of hard-rock type, the authors analyze its 14 cost items such as ore mining fee and major materials fee etc.
通过对硬岩型铀矿坑口堆浸法的工艺流程分析，总结出坑口堆浸成本由矿石开采费用、主要原材料费用等14项要素组成，并建立了地质经济评价模型。
Xinli mining area of Sanshandao gold deposit is the first hard rock mine which belongs to the under-sea deposit in our country, and only Longkou is mining coal under sea in domestic.
三山岛金矿新立矿区是我国第一个进行海底采矿的硬岩矿山，国内仅龙口在海下采煤。
Half coal rock lane quick-excavating technique under the condition of "two hard" has always been a main excavating problem influencing the Datong mining Cop.
前言：“两硬”条件下半煤岩巷掘进一直是影响大同煤矿集团有限责任公司采掘关系的主要问题。
Half coal rock lane quick-excavating technique under the condition of "two hard" has always been a main excavating problem influencing the Datong mining Cop.
前言：“两硬”条件下半煤岩巷掘进一直是影响大同煤矿集团有限责任公司采掘关系的主要问题。
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