multi hole directional drilling 多开眼定向钻井 directional drilling machine 定向钻机 directional drilling crossing method 定向钻穿越法 ..
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最后给出了水平定向钻机完整产品总体设计方案的配置实例，并验证了所提方法的可行性。
The proposed approach was applied in the product development of horizontal directional drilling machine and its feasibility was verified.
通过经济技术比选，采用水平定向钻机进行铺管作业，取得了较好的社会效益和经济效益，在工程实践中极具推广价值。
Through economic and technical comparison, it can obtain good social and economic benefits. And extremely has promoting value in p...
钻架是水平定向钻的主要承载部件，其强度和刚度对钻机能否正常工作影响很大。
The drilling frame is the main load-carrying part in horizontal directional drill, its strength and stiffness have great effect on the performance of the drill.
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