The working traits of raising drilling rig and its application in Jisha Power Station are depicted briefly. Construction procedure and measures for quality guarantee are offered.
简述了反井钻机的工作特点及其在吉沙水电站工程的应用，给出了施工程序及质量保证措施。
The working principle and application of a hydraulic testing platform for screw drilling tools are introduced.
介绍了一种螺杆钻具液马达试验架的工作原理及实际使用情况。
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