针对机械驱动钻机液力变矩器传动消耗燃油多的问题，开展了液力偶合器传动的试验。
In the light of the problem of excessive fuel consumption in hydraulic torque converter drive of mechanical drilling RIGS, experiments on the hydraulic coupling transmission are conducted.
联合收割机、四轮驱动拖拉机、风钻机、农用轨道拖车、捆草机、播种机……这些农业机械的总价值大约为22万美元。
Combined harvesters, four-wheel drive tractors, wind rig, agricultural rail vehicles, bundle of grass machine, machine... These agricultural machinery's total value is about 22 million dollars.
应用模态分析技术、振型截断法，对专利证书号第352466号的ZJ50 J双升式机械驱动石油钻机振动特性进行研究。
Using the modal analysis method in this paper, the vibration characteristics of ZJ50J double-lifting mechanical driven oil drilling rig (patent No. 352466) is studied.
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