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Economy and reliability are the two major problems the packaging and operation of drill rig engine.

钻机柴油机的选型、配套和使用,既有经济性问题,又有可靠性问题.

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This thesis introduces briefly the structures, test situations and main technical parameters of the drill rig.

本文着重介绍了钻机的结构特点 、 试验情况、主要技术参数等.

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This article introduce a kind of mechanical and electric combined drive drill rig.

介绍了一种机电复合驱动石油钻机.

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