The control of the trajectory is the core technique in horizontal well technique, while trajectory design and optimal design are the two key techniques.
井眼轨迹控制是侧钻水平井技术的核心，而轨道设计与优化设计又是轨道控制技术的两大关键技术之一。
In view of the particularity for maneuver warhead reentry trajectory and the guidance method, key techniques in attitude control system design are analyzed.
针对机动弹头再入弹道和制导方式的特殊性，分析了激光末制导机动弹头姿控系统设计的关键技术。
Well trajectory design is one of the key techniques for successfully drilling an extended reach well.
井眼轨道设计是大位移井的关键技术之一。
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