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- driving face of coal roadway 煤巷掘进面
- Gas Management of High Gas and High Stress in Driving Face of Coal Tunnel in Chaohua Coal Mine 超化煤矿高瓦斯高应力煤巷掘进面瓦斯治理
- Underground whole-space transient electromagnetic (UWTEM) method was tested at the driving face of a drift in a coal mine for detecting water-bearing zones ahead of tunneling. 根据初探结果,采用不共面同轴偶极观测方式时,UWTEM在巷道掘进头前方的有效探测范围约为70m,巷道每掘进50m进行一次跟踪探测。
- Existing Problems of Coal Roadway Bolting Technology in Datong Coalmines Group Co. 煤巷锚杆支护技术在同煤集团应用中存在的问题。
- Poor machining quality of drillpipe of coal roadway drilling machine and the cause of rupture on case are analysed. 分析了煤矿用坑道钻机钻杆的加工质量问题和现场使用时产生断裂的原因。
- Study of strata behavior of Driving the Roadway along Goaf in longwall with top-caving mining face of coal seams with extra-thickness and softness 特厚软煤层综放工作面沿空送巷矿压显现规律研究
- He was always cool in the face of danger. 他在危险面前总是镇静自若。
- We should hold on in the face of hardships. 在困难面前我们应该坚持。
- Prediction Method of Coal and Gas Outburst Dangerous Level in Coal Roadway Face 工作面煤与瓦斯突出危险程度预测技术研究
- He showed great bravery in face of danger. 面对危险，他表现得十分勇敢。
- We need to replenish our stocks of coal. 我们需要再次补充煤的储备。
- We are powerless in the face of such forces. 面对这样强大的力量，我们无能为力。
- Prohibition was laid on the export of coal. 禁止煤炭输出。
- He succeeded in the face of great opposition. 尽管遭到许多反对,他还是成功了。
- On the face of it, it seems quite reasonable. 从表面看,这似乎很合理。
- He put a shovel of coal on to the fire. 他往火炉里加了一铲煤。
- She exhibited no fear in the face of danger. 她面对危险毫无惧色。
- We had a big delivery of coal today. 今天我们收到大批订购的煤。
- They showed courage in the face of danger. 面对危险他们表现出了勇气。
- Application of Ground Radar in Advance Detection of Coal Roadway 探地雷达在煤巷超前探测中的应用
