| 1. | The owners of the coal mines had formed an association to protect their interests .
煤矿主们早组织了一个同业公会以保护他们自己的利益。 |
| 2. | The construction of winch braking system in main well of renlou mine
任楼煤矿主井绞车制动系统改造 |
| 3. | Study on the reform plan of main hoist skip in hiang jia coal mine
梁家煤矿主提升箕斗改造方案研究 |
| 4. | Design of selecting system of type for master ventilation in coal mine
煤矿主通风机选型系统的设计 |
| 5. | Temporary winding change construction of main shaft in huxi coal mine
湖西煤矿主竖井临时提绞改装施工 |
| 6. | Design and optimization of belt conveyor for inclined shaft in coal mine
煤矿主斜井带式输送机优化设计 |
| 7. | Fault diagnosis of coal mine main ventilator by way of wavelet packet
煤矿主通风机故障诊断的小波包方法 |
| 8. | Design of power supply of conveyance system of main drift in tucheng mine
土城煤矿主平硐运输系统供电设计 |
| 9. | The automatic reform technolgy of main transport system in huafeng coal muine
华丰煤矿主运系统自动化改造技术 |
| 10. | Method of main shaft wall construction expansion clay in lu xi coal mine
鲁西煤矿主井井筒施工膨胀性粘土段措施 |
