查询词典 trajectory

The paper presented the profile optimizing technique,make-up of string,trajectory control technique,and MWD GAMMA geologic survey technique.

文章在结合现场施工经验的基础上，总结出了一套适合中原油田的使用MWD+GAMMA地质导向的水平井钻井技术。

Based on the periodic mean control,a quasi double channel control scheme was proposed according to the characters of rolling projectile,for the two-dimension trajectory correction fuze with crossed canard.

根据旋转弹体自身的特性，针对十字舵型二维弹道修正引信，提出了一种基于周期平均控制力的准双通道控制方案。

Based on probability theory, a method for describing and calculating the collision probability between rendezvous and docking vehicle and debris is presented, and the method involves quantitatively analyzing the collision probability using quasi maximum instantaneous collision probability and total collision probability. The method calculating the indexes is developed, and the input required to perform a calculation includes the respective state vectors, position error covariance matrices and physical sizes of objects involved.(3) Two methods to analyze relative trajectory safety between chaser and target are developed, which are 3-sigma ellipsoid based methodology and collision probability based methodology.

1分析了交会对接各阶段面临的主要轨迹安全威胁，阐述了被动和主动安全策略、目标器的交会对接控制区域等保证交会安全的措施；(2)基于概率思想发展了线性和非线性运动情况下飞行器与空间碎片的碰撞判断方法，提出采用总碰撞概率和拟最大瞬时碰撞概率来综合描述飞行器与空间碎片的碰撞危险程度，推导了通过飞行器和空间碎片各自的状态矢量、位置误差协方差矩阵以及形状尺寸来计算碰撞概率的公式；(3)提出了两种分析追踪器和目标器之间相对轨迹安全的新方法：基于3σ椭球的轨迹安全分析方法和基于碰撞概率的轨迹安全分析方法。

Variables are the thrust to gravity ratio; the load of wing; proportional coefficient in passive trajectory.

设计变量为导弹的推重比、翼载和被动段的比例导引系数。

Branch horizontal well ; hole trajectory control ; casing window-opening ; barefoot laterally drilling ; application of tools

分支水平井；井眼轨迹控制；套管开窗；裸眼侧钻；工具应用

The paper introduces the technology of optimization design of wellbore proile, the casing window-opening technology, and the barefoot laterally drilling technology. In view of such problems as the poor wellbore stability of large hole, the easily collapsed "Shuangshi bed", the barefoot laterally drilling, the different depth of production formations, the frequent trajectory adjustment, the prediction of torque and drag, and window entry of branch wells, systematic reasonable technical measures are established.

介绍了该井井身剖面优化设计、套管开窗及裸眼侧钻等新技术，针对表层大井眼井壁稳定性差、&双石层&易垮塌、裸眼侧钻、气层深度不一、轨迹调整频繁、摩阻扭矩预测及分支井所面临窗口再入等一系列技术难题，制定了一整套合理的技术措施。

Callaway Golf engineers want the ball to break the speed limit, become targets of titanium woods, redefining the face after the ball left of the trajectory to the ball and speed of re-evolution of flu.

Callaway Golf工程人员想要打破出球速度的限制，成为全钛木杆的指标，重新定义球飞离杆面后的弹道，力求球感及速度再进化。

In this paper,Restricted Minimum Disturbance Map based scheme of attitude control is presented to keep the attitude of the base fixed during the movement of the manipulator via planning motion trajectory of the end-effector of manipulator without using reaction wheel or reaction thruster.

这种方案不使用反作用轮或反作用喷气装置，而通过规划机械手末端的运动轨迹，使机器人的本体姿态在机械手动作过程中基本保持不变。

After the ballistic trajectory in midcourse was simulated, the aspect angles of warhead target were calculated in assumed scene by coordinate transformation.

仿真了空间目标飞行弹道后，通过坐标变换得到设定战情下的弹道目标雷达视线角。

The particularity that train moves along fixed trajectory makes it possible to use track map directly in train positioning solution.

因此，利用精确的数字轨道地图来研究一种精度和稳定性更高的列车定位方法具有重要的现实意义。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。