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钻头棒料 | |||
钎子 | |||
钻杆把凿岩机的冲击力和回转力矩传递给钻头的器件。根据使用条件、凿岩机种类、爆破方法的不同,除了可以选用锥形接头钻杆、接续钻杆外,还可选用螺旋钻杆、麻花钻杆等 | |||
钻杆 | |||
钢钎 | |||
带孔棒 |
drill rod : 61 phrases in 7 subjects |
Bridge construction | 1 |
Drilling | 4 |
Earth sciences | 1 |
Engineering geology | 8 |
Hydroelectric power stations | 3 |
Oil / petroleum | 3 |
Technology | 41 |