工程钻机是钻机的一个分类和扩展，顾名思义，工程钻机是用于高层建筑、港口、码头、水坝、电力、桥梁等工程的大口径灌注桩施工的钻机，
基础工程钻机性能的好坏，很大程度取决于动力头的质量。
The operation performance of driller, used for basement construction, is dependent on the quality of power unit in a considerable degree.
分析了工程钻机在施工过程中轴承游动间隙对钻机的影响。
The effect of the bearing travel clearance on the drill in the operations is analyzed.
本地质工程钻机车采用双动力驱动，汽车动力与钻机专用装置动力分离工作。
This geological engineering gadding car uses dual power drive, the power of the vehicle and the power for the special device of the drill work separately.
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