| 1. | The design of automatic testing system for pneumatic rock drill
气动凿岩机性能测试系统的研制 |
| 2. | General technical condition of pneumatic rock drill used in coal mine
煤矿用气动凿岩机通用技术条件 |
| 3. | Line oilers for pneumatic rock drills
气动凿岩机用注油器 |
| 4. | Rules for the inspection of hand - held air - leg pneumatic rock drills for export
出口手持式气腿式凿岩机检验规程 |
| 5. | Pneumatic rock drill
风动凿岩机 |
