... 二弧焊机 two arc welder 定向钻法 directional drilling method 气举成沟法 airlift ditching method ...
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The main problems on horizontal directional drilling method of non-excavation in the practical applications were reviewed in the paper.
论述了非开挖水平导向钻进法在实际应用中的主要问题。
Method and its application of uneven ground modifying in directional drilling locus design are narrated in this article.
叙述了在定向钻进的钻孔轨迹设计时，地面不平整度修正的方法与应用。
Simulation method of directional drilling course was discussed under limited survey point data, and the reliability of simulation method was analyzed with cases.
在测点数据有限的情况下，探讨定向钻孔轨迹的模拟方法，并通过实例分析模拟方法的可靠性。
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