采煤

• Study on the mining way under industry square
  工业广场下压煤采煤方法研究
• Coal gas outburst prevention by drainage technology
  采用抽放技术防止采煤工作面瓦斯突出
• Steelcord conveyor belts for underground coalmining ; marking
  井下采煤用钢索输送带.标记
• And he looks like his head has been under a tram for two years
  他看起来就好象个采煤的
• Coal is mined under nappe in xinji mine area
  新集矿区是从推覆体下采煤。
• The economy transformation paths of aged mining cities
  循环经济对采煤塌陷地生态修复研究
• Responsible for technical issues in the production
  负责采煤机螺旋滚筒等产品的技术工作。
• A talk about the roof management of wangvili coal faces
  旺格维利采煤工作面顶板管理的探索
• Common faults and handling in shearer use
  采煤机使用中常见的故障及处理
• Metal shielded cable for coal cutter , that is type 7 cable
  采煤机用金属屏蔽拖电缆，即仿英