“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	Zhengzhou Memorial Tower and Memorial Hall for Feb.7th Strike Zhengzhou Natural History Museum Zhengzhou north railway station Zhengzhou School for Surveying and Mapping Zhengzhou Science and Technology Museum Zhengzhou University Zhengzhou University of Aeronautics Zhengzhou-Xi'an High Speed Railway Zhengzhou Yellow River Scenic and Historic Area Zheng Zidan Zhengzi opera Zhengzi Opera Troupe of Lufeng City Zhengzitong Zheng Zuoxin Zhenhai Coastal Defence History Museum Zhenhai Dam Zhenhailou and Guangzhou City Wall in the Ming Dynasty Zhenhai Wan Zhenjiang city Zhenjiang Economic and Technological Development Zone Zhenjiang Jinshan Park Zhenjiang Library of Jiangsu Province Zhenjiang new provincial capital construction plan Zhenjiang Shi Zhenjiang Three Mountains Scenic and Historic Area

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