| 1. | Rock drilling machines and pneumatic tools - terminology
凿岩机械与气动工具术语
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| 2. | Model to evaluate anisotropy of rock drill - ability
岩石可钻性各向异性评价模型研究
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| 3. | Evaluation on rock drill - ability by well logging data
利用测井资料评价岩石可钻性研究
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| 4. | Terminology of rock drilling machines and pneumatic tools
凿岩机械与气动工具名词术语
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| 5. | Rope thread extension steel bars for rock drilling
凿岩用波形螺纹连接钎杆
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| 6. | Rock drilling equipment . hollow drill steels in bar form
凿岩钎杆用中空钢
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| 7. | Rock drilling equipment - hollow drill steels in bar form
凿岩钎杆用中空钢
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| 8. | Ore - used flameproof electrical rotary rock drills
矿用隔爆电动岩石钻
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| 9. | Rock drilling machines and pneumatic tools - safety requirements
凿岩机械与气动工具安全要求
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| 10. | The design of automatic testing system for pneumatic rock drill
气动凿岩机性能测试系统的研制
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