“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	agricultural production function model agricultural production organization agricultural production statistics agricultural production structure agricultural production technology system agricultural product marketing agricultural product price subsidy policy agricultural product price survey system agricultural product processing surplus agricultural products certification agricultural products certification of China agricultural products detection agricultural products E-commerce agricultural products electronic commerce agricultural products export policy agricultural products fair price supermarket agricultural products logistics distribution center agricultural products market agricultural products market services agricultural products revenue insurance agricultural products support price policy agricultural protection policy agricultural public service platform agricultural radio and television school agricultural radio frequency identification

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