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Large diameter drilling piles have been extensively used in foundation engineering.
大直径钻孔灌注桩在基础工程中的应用非常广泛.
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The difference between large diameter drilling and oil drilling is reviewed with their characteristics.
论述了大直径钻井工程与石油钻井的不同特点.
大口径钻探???采用直径大于500mm钻头的钻进技术。 钻进工艺有取心和不取心全断面钻进两种。???
国先网英语在线翻译词典收录了4367410条英语词汇在线翻译词条，基本涵盖了全部常用英语词汇的中英文双语翻译及用法，是英语学习的有利工具。