| 1. | Development and application of hydraulic automatic air door
液压自动风门的研制与应用 |
| 2. | The design of automatic air door in trackless main haulage roadway
无轨运输大巷的自动风门设计 |
| 3. | Steel thin - walled and reverse air door
钢质薄壳反向风门技术条件 |
| 4. | General spacifications for air door switching motion transducer in mine
矿用风门开闭状态传感器通用技术条件 |
| 5. | Development and application of new type air door automatic closing equipment
新型风门自动闭锁装置的研制与应用 |
| 6. | Principle of non - pressure air door and its application in ventilation system
矿用无压风门的原理及其在通风系统中的应用 |
| 7. | Improvement of limited position stoppage with air door of main fan in shigejie coal mine
石圪节煤矿主通风机风门限位闭锁的改进 |
| 8. | Air regulating systems in mining ; wing air doors for travelling tracks ; air doors without pressure reduction
矿山空气调节系统.人行道用叶片调风门.非减压的风扇 |
| 9. | Air regulating systems in mining ; wing air doors for haulage tracks ; one - wing type doors without pressure reduction
矿山空气调节系统.运输道用叶片调风门.非减压的单叶 |
| 10. | Air regulation systems in mining - wing air doors for haulage tracks - double - wing type doors with pressure reduction
采矿的空气调节系统.运输轨道翼形通气门.减压式双翼 |
