您要查找的是不是：
- The measurement of the drilling inclination is the key of the system success-fail in the VDS (vertical drilling system) controlled by microcomputer. 摘要在微机自动控向垂钻系统中，钻孔的倾斜角测量是系统成败的关键因素。
- automatic vertical drilling system 自动垂直钻井系统
- Design of hydraulic mechanism on automatic control vertical drilling system 自动垂直钻进系统的液压系统设计
- vertical drilling system 垂直钻进系统
- Levelling is usually carried out with vertical drill holes. 整平爆破通常用垂直炮眼进行。
- The flourishing top-drive drilling system in the past 20 years has accomplishes a historic leap of rig modernization. 20多年来世界上蓬勃发展的顶部驱动钻井装置，实现了钻机现代化的历史性跨越。
- The forming mechanism of the bias force is the key to the study of the modulated steerable rotary drilling system. 导向力的形成机理是研制旋转导向工具的核心。
- Weatherford casing drilling system, then only a single time, there is no drilling from the time the next drill. 威德福套管钻井系统则只有接单根的时间，没有起钻下钻的时间。
- Its drilling system uses a 380-ton protective casing over the wellhead that is about the size of a six-story office building. 它的钻探系统采用了重380吨、约六层办公大楼大小的保护罩（防爆装置）来保护井口。
- Model DQ70BS top drive drilling system (TDDS)is developed based on Model DQ60D and Model DQ60P DC TDDS and Model DQ20Y hydraulic TDDS. 摘要在DQ60D、DQ60P直流电顶驱和DQ20Y液压顶驱的基础上，研制了DQ70BS交流变频顶部驱动钻井装置。
- Vertical drilling is one of the drilling challenges encountered worldwide which can simplify casing program and reduce casing sizes, improve the ROP and decrease drillstring accidents. 垂直钻井是当今世界性钻井难题之一,它具有减少套管层次和套管尺寸、提高机械钻速、减少钻柱事故的优点。
- A new scheme which is baed on variable parameter vibration drilling for different hole part and a variable parameter vibration drilling system is built up. 首次提出在每个孔加工的不同区段采用不同参数的变参数振动钻削的新思路，并建立了变参数振动钻削系统。
- The differentiae between the different horns are analyzed with examples, and the compound horn is commended to be used when designing the ultrasonic vibration drilling system. 用实例分析了几种变幅杆的不同点,并指出设计超声振动钻削声学系统时推荐采用复合变幅杆。
- The closed loop control of the stabilizing platform on the rotary steering drilling system is the key technique of the modulating rotary steering drilling system. 旋转导向钻井工具稳定平台的闭环控制是调制式旋转导向钻井系统的关键。
- Drilling riser is the key equipment for oil and gas development in deep water.The motion of floater in drilling system and wave load may lead to fatigue failure. 钻井隔水管是深水油气田开发的关键装备，钻井系统浮体运动与波浪载荷可能导致隔水管的疲劳失效。
- Vertical drills include vertical kicking, vertical sculling, bobs and streamline blast offs. 垂直练习包括垂直蹬腿，垂直划水，bobs（踩水的意思吗？）
- One of my favorite, and I think most functional vertical drills, is vertical breaststroke work. 我最喜欢的，也是我认为最有功效的一个垂直练习，就是垂直蛙泳。
- Ho, R. G. (1999). Adaptive drill system: A neural network approach. Paper submitted to the Proceedings of the National Science Council, Part D.(Coauthor: Wang, Hsu-Yie). 何荣桂(1999)。适性测验题库之品质管理策略。国家科学委员会研究汇刊：人文与社会科学，9卷，4期，页630-652。(共同作者：陈丽如
- A New Type of Vertical Drilling Tool 一种新型垂直钻井工具
- Adjustable multi-spindle vertical drilling machines 可调多轴立式钻床
