论文部分内容阅读
地矿部“七五”两项科技攻关项目“人造金刚石复合材料及钻头的开发研究”和“多工艺空气钻进技术的开发研究”经过三年的工作又取得十分可喜的进展。据1988年12月初召开的项目汇报协调会上获悉;
After three years of work, the “Seventh Five-Year Plan” scientific and technological project of the Ministry of Geology and Minerals, “Research and Development of Synthetic Diamond Composites and Drills” and “Research and Development of Multi-process Air Drilling Technology” made gratifying progress. It was learned at the project reporting coordination meeting held in early December 1988;