“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	combination of green space with point、line and surface combination of health care and elderly care combination of housing types combination of judicial and prosecutorial organs combination of legislature and administration combination of lenses combination of medical and support combination of medicinals combination of medicine and education Combination of medicine and nursing combination of points of namesake channels，combination of points of namesake meridians combination of political and economic systems combination of prisms combination of sentences combination of several tunes combination of signs combination of source rock,reservoir and cap rock combination of sports and education combination of structure action combination of the nature and flavour combination of use and nourishment combination of vehicles Combination Principle combination principle combination printing

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。