采用摆线针轮减速器，回转扭矩大，凿岩效率高。
It adopts the cycloidal gear reducer with large torque to meet high efficiency drilling.
卡杆现象是穿孔设备常见的故障之一，是影响液压凿岩钻机高效率、高质量穿孔的重要原因。
The sticking steel is one common trouble of drilling equipment and an important cause effecting the high efficiency and high quality drilling of hydraulic drill.
液压凿岩机工作时，冲击机构的能量损失对其效率有很大的影响。
The energy loss of the impact mechanism of hydraulic rock drill greatly affects drilling efficiency when it operates.
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