“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	single system image single system image, SSI single system recording singlet single tank thermocline heat storage single target and single hit model singlet exciton fission singlet fission singlet manifold Singleton singleton singleton function singleton graph singleton pattern singleton set singlet pairing single track single trailer combination vehicle single transmission line single-tree selection felling singlet state singlet state and triplet state singlet term singlet-triplet energy gap single twitch

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