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- Application of Pedrail-walking Type Hydraulic Supports in Board and Pillar Mining method 房柱式开采中履带行走式液压支架的应用
- board and pillar mining method 残柱式开采法
- Technical analysis on feasibility of new room and pillar mining method 新型房柱式采煤法可行性技术分析
- Ore Recovering from Goaf of Room and Pillar Mining Method in Xishan Gypsum Mine, Taiyuan City, Shanxi Province 西山石膏矿房柱采矿法采空区矿石回收
- Roof Control Design and Practice of Very Hard Roof in Coalface Instead of Knife and Pillar Mining Method in Mentougou Mine- 门头沟矿坚硬顶板取消刀柱顶板控制设计及实践
- He pays 40 a week (for) board and lodging. 他每周支付膳宿费40英镑。
- He paid￡10 a week for board and lodging. 他每周付10英镑膳宿费。
- A semi-analytic method used in three-dimensional subsidence calculation of room and pillar mining 半解析方法用于房柱式开采沉陷的三维计算
- A numerical simulation method used in three-dimensional subsidence calculation of room and pillar mining 房柱式开采减沉效果的三维数值模拟研究
- She pays for her board and lodging, her uncle finds her in tuition. 她自己负责膳宿，她叔叔供给她学费。
- China macro-economy and pillar industry! 中国宏观经济及支柱产业状况!
- She pays for her board and lodging but her father finds her in clothes. 她自己支付膳宿费，而她父亲供给她衣服。
- Keywords High level pillar mining;Cemented fill-mass;Large diameter longhole mining method;Heterogenous interface control blast; 高阶段矿柱回采;胶结充填体;大直径深孔采矿法;异质界面控制爆破技术;
- Delivery can be made free on board and your order dispatched within24 hours. 贵方如能在二十四小时内寄出订单，本公司就以船上交货价条件交货。
- Discussion on ventilation leakage law in gateway of room and pillar mining 关于房柱式开采巷道漏风规律的探讨
- He bypassed his colleagues on the board and went ahead with the deal. 他未征求董事会中同事的意见就做了这笔交易。
- Keywords room and pillar mining,shortwall mining,goaf,mechanization; 房柱式采煤;短壁采煤法;采空区;机械化;
- We' ll be very glad to board and lodge you. 我们将非常高兴供你们膳宿。
- Look at the bill board and answer the questions. 看告示牌,回答下面的问题。
- board and pillar method 房柱式开采法
