...键词：不良地质 边坡锚固 成孔技术 探讨； [gap=500]Key words：bad geology；side-slope anchoring；hole-drilling technology；discussion5 E.
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packed hole drilling technology 满眼钻进工艺
slim hole drilling technology 小井眼钻井技术
The paper introduces a new technology of CFG pile-pressure grouting of long helical drilling hole, and analyses design, service scope and development trend of CFG pile.
介绍了CFG桩的一种新的成桩工艺——长螺旋钻孔压力灌浆法，对CFG桩的设计、使用范围和发展趋势作了分析。
Directional engineering hole drilling technology is a new technology in drilling engineering projects.
工程孔定向钻进技术是钻探工程的一项新技术。
The PCB NC drilling machine is key technology equipment in the PCB's precise hole site processing.
印制电路板（PCB）数控钻床是印制电路板精密孔位加工关键的工艺装备。
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