“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	Tomboy Tom Brokaw Tombs at Arzhan Tombs at Dasung-dong Tombs at Fangmatan Tombs at Hongshan Tombs at Jiangjuncun Tombs at Kuche Youyi Road Tombs at Lijiashan Tombs at Qijiangya Tombs at Yandunshan Tombs at Zhenshan tomb sculptures of China tomb sculptures of dramatic stage and Zaju figures of Jin Dynasty in Houma tomb sculptures of Han Dynasty tomb sculptures of Northern Song Dynasty tomb sculptures of Sui and Tang Dynasties tomb sculptures of Tang Dynasty tomb sculptures of Western Xia Tombs of Chu State at Guozhuang Tombs of Chu State at Xinyang Tombs of Chu State in Changsha Tombs of Eastern Jin and Southern Dynasties at Machang Tombs of Eastern Wu and Western Jin Period in Nanjing Tombs of Eastern Zhou Dynasty at Chengqiao

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