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通过对国内外有关定向取心的方法、以及工具仪器进行认真的调研，并对各种方法和工具仪器进行细致的分析对比后，我们确定了“随钻定向取心方法”方案，并设计试制了定向取心工具和测量仪器。81年3月间，所、厂分别完成了工具和仪器的试制与室内调试工作。四月间全部组装配套在成都探矿工艺研究所试验机台进行了浅孔的钻进试验，取得了成效。8月
Through the careful investigation of the methods of orienting at home and abroad, as well as the tools and instruments, and careful comparison and analysis of various methods and instruments, we have determined the program of “directional drilling while drilling” and have designed the trial system Directional coring tools and measuring instruments. In March 1981, the institute and the factory completed the trial production and laboratory commissioning of tools and instruments respectively. In April, all the assembly facilities were drilled in a shallow hole in the test machine of the Chengdu Prospecting Technology Research Institute and the results were achieved. August