coal seam mining

• 煤层开采

coal seam mining的用法和样例：

例句

1. The influence factor of spontaneous ignition on coal seam mining and protective measures in Yangquan mine No.3 shaft are approached.
   分析了阳泉矿区三矿井田煤层开采对自燃着火的影响因素，探讨了预防煤层的自燃着火的开采技术措施。