短螺旋钻机钻孔成桩工艺
Drilling-into-pile techniques by the Short Spiral Drill
柴油机发电驱动钻机
diesel electric driving rig
电驱动钻机
electric drive of drilling rig
electric rig
electric driven oil drilling rig
发动机驱动便携式自起动泵
engine-driven portable self priming pump
发动机驱动制冷
gas-engine-driven chillers