“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	opera performance of rural society opera performance of urban society opera performance outside one's troupe opera performed at a market rally opera performed by official troupe of Qing Dynasty Opera Performers in Ming and Qing Dynasties opera played in temple fairs opera poster opera practice opera practices opera prints of Taohuawu opera prints of the Ming Dynasty in Fengxiang County opera prints preserved in Mianzhu City opera reform opera rehearsal accompanied with musical instruments opera relics and artifacts Opera Research Academy of Shaanxi Province Opera Research Institute of Chinese National Academy of Arts opera robe for a middle-rank civil official opera school for Yunnan opera improvement Opera School of Baimiaoji Village Opera School of Henan Province Operas Collected in Che Khan’s Mansion opera sculpture opera sculpture in Qing'an Guild Hall

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