| 1. | Auxiliary ventilation in coalmines ; fans with electric motor drive
矿山辅助通风设备.电动机驱动的风扇 |
| 2. | Auxiliary ventilation for mining ; flanged sheet metal reducers
矿井辅助通风设备.带法兰的薄金属板制异径接头 |
| 3. | Auxiliary ventilation in coalmines ; fans with hybrid electric pneumatic drive
煤矿辅助通风设备.带组合驱动装置电动气动的风 |
| 4. | Auxiliary ventilation for mining ; sheet metal connectors with flange and shoulder
采矿辅助通风设备.带法兰-凸肩的薄金属板连接器 |
| 5. | Auxiliary ventilation for mining ; sheet airducts , with collars and loose flanges
矿井用辅助通风设备.带卡圈和活动法兰的钢制通风管 |
| 6. | Auxiliary ventilation for mining ; sheet metal reducers with flange and shoulder
矿井辅助通风设备.带法兰和凸缘的薄金属板制异径接头 |
| 7. | Auxiliary ventilation for mining ; cladding material for flexible airducts ; requirements , testing
矿井辅助通风设备.挠性通风管用包层材料.要求检验 |
| 8. | Auxiliary ventilation in mining ; flexible plastic air ducts for forced ventilation ; flat air ducts
矿井辅助通风设备.强制式通风设备的柔性塑料空气导管 |
| 9. | Auxiliary ventilation for mining ; flexible plastic air ducts for exhaust and forced ventilation ; spiral air ducts
采矿辅助通风设备.排气和强制通风用柔性塑料空气导管 |
