“horizontal directional drilling”的概念、定义、翻译、参考文献-科学参考

单词	horizontal directional drilling
释义	horizontal directional drilling Encyclopedia 工学掘进机械释 horizontal directional drilling水平定向钻将一个可调向操控的钻头连接在钻杆组的端部，用于地下水平定向钻孔的机具。是在不开挖地表面条件下，铺设多种地下公用设施（管道、电缆等）的施工设备，广泛用于供水、电力、电信、天然气、煤气和石油等管线铺设施工中。
随便看	Ha Geun-chan Hagg compound Haggim Hagg’s rules Hagiographa Hagiwara Sakutaro Hagiwara Yusuke Hagongda Hague Academy of International Law Hague Conference on Private International Law Hague Peace Conferences Hague Rules Hague School Hague-Visby Rules Hag variety Hahaqiang opera Ha-Ha-Wall Hahn Hahn Banach theorem Hahn-Banach theorem Hahn crater Hahn decomposition Hahn decomposition theorem Hahn extension theorem Hahn-Metcalf drift tube

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