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.

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。

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Full hydraulic steering equipment, central hinge in connection to roll-waist, small turning radius, flexible operation, high work efficiency.

全液压转向装置，中间铰接折腰转向，转弯半径小，操纵灵活，作业效率高。

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It is highly important to the efficiency guide line of the whole hydraulic equipment unit and to the unit runs safety and steadily that the wicket gate end clearance of the hydraulic turbine.

水轮机的导叶端面间隙对整个水轮发电机组的效率指标及安全稳定运行有着重要影响。

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