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由地质矿产部勘探技术研究所钻机四室研制的JS—1型钻速表,经过野外队四个月生产试验考核(共累计进尺1261米,工作时间1098小时),以及有关专家、教授评议,
The JS-1 drilling speed table developed by the drilling rig four rooms of the Institute of Exploration and Production Technology of the Ministry of Geology and Mineral Resources passed the four months production test assessment of the field team (total footage of 1261 meters and working time of 1,098 hours), as well as relevant experts and professors’