• This article mainly suggests using the drilling template to solve the difficult problems of manufacturing the group of line hole in the brace.

    主要研究采用模板解决支承架上行加工难题

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  • Designed with a form as from top to bottom and group drilling set, a new type of drilling machine for air hole for automatic molding line has been awarded a national patent.

    新型气孔用于全自动造型线设计采用自上而下钻气孔方式。该设计获得国家专利。

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  • The wire-line directional drilling and coring technology can take cores and drill directionally without using down-hole motors.

    绳索取心技术其钻进效率高广泛应用,但其无法实施定向作业

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  • It also describes the new techniques and the results drilling tracing of deviation correction in the construction of the bottom of the plumb line hole. Finally, several views are out forward.

    介绍了垂线孔孔随钻跟踪定向纠偏技术施工效果,最后结合实例谈几点认识。

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  • It also describes the new techniques and the results drilling tracing of deviation correction in the construction of the bottom of the plumb line hole. Finally, several views are out forward.

    介绍了垂线孔孔随钻跟踪定向纠偏技术施工效果,最后结合实例谈几点认识。

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