掘进

• Tunnelling machines - air locks - safety requirements
  隧道掘进机械.气闸.安全性要求
• Rock bolts for mining and tunnelling ; terms
  采矿和坑道掘进工程用锚杆.术语
• Analysis of result of smooth blasting in mining tunnel
  光面爆破掘进采矿巷道的效果分析
• Technology develop for lateral axis roadhead of ebz series
  系列横轴式掘进机的技术发展
• Research on application of vibrant cutting on roadheader
  振动截割在掘进机上的应用研究
• Talking about the cyclic operating ways of mine tunnelling
  浅谈煤矿掘进的循环作业方式
• Development and trial of ebh j - 132 roadheader
  132型掘进机的研制与试验
• Several ways of safe drivage of directly mining no . 8 seam
  直采8号煤层安全掘进的几点做法
• Analisys of walking speed regulation system of driving machine
  掘进设备行走调速系统分析
• Application of bkd1 - 400z 1140 switch in roadway driving of
  掘进中的应用