查询词典 trajectory

Before target-entering into a horizontal well or in the process of drilling horizontal section,to confirm the controlling range of deviation angle and azimuth of hole section is not only an important measure to guarantee target rate and trajectory control accuracy of the horizontal well but also one of the important contents in trajectory supervision of the horizontal well.

在水平井入靶前或水平段钻井过程中，确定待钻井段井斜角和方位角的控制范围是保证水平井中靶和轨迹控制精度的关键，也是水平井井眼轨迹监控的一项重要内容。

Before targetentering into a horizontal well or in the process of drilling horizontal section, to confirm the controlling range of deviation angle and azimuth of hole section is not only an important measure to guarantee target rate and trajectory control accuracy of the horizontal well but also one of the important contents in trajectory supervision of the horizontal well.

在水平井入靶前或水平段钻井过程中，确定待钻井段井斜角和方位角的控制范围是保证水平井中靶和轨迹控制精度的关键，也是水平井井眼轨迹监控的一项重要内容。

Variation laws of electron movement with emergence angle and microwave electromagnetic parameters are also derived. The emergence angle of electron has significant effect on the movement of electron, and there is an emergence angle in which the electron has the maximum trajectory length and impact energy, Impact energy will increase and return time will reduce as increasing the amplitude of electric field, and both parameter would oscillate with the phase of electric field, which can essentially explain that multipactoring electron number oscillates in twice the frequency with the increase of microwave frequency, electron trajectory will change from parabolic-like movement to complex oscillation.

研究发现：电子出射角度对其运动状态有显著影响，电子存在运动轨迹最大的某一出射角度，该角度下电子拥有最大的撞击能量；微波电场幅值的增加将使电子撞击能量增加，返回时间减小，微波电场相位的变化使电子的撞击能量和返回时间呈周期振荡，这从本质上解释了电子数量在二次电子倍增过程中以微波频率两倍周期振荡的原因；随着微波频率的增加电子将由简单的类抛物线运动转变为复杂的振荡运动。

In this paper, a space model of antisubmarine homing torpedo's trajectory has been established based on the surface warship attacking underwater target, a formula which can be used to calculate the trajectory length of antisubmarine horning torpedo is also given.

在建立了水面舰艇发射反潜自导鱼雷攻击水下目标的空间弹道模型的基础上，提出了反潜自导鱼雷全弹道长度的一种计算公式。

The trajectory of antisubmarine homing torpedo is a complex space curve, so there is big limitation in accounting its trajectory length by plane geometry.

由于反潜自导鱼雷的弹道是一条复杂的空间曲线，因而平面几何解析法求解其弹道长度有较大的局限性。

On the other hand, being dissected along nature myofibrillar trajectory, all samples in group 3 were successfully unrolled to a myocardial band composed of basal loop and apical loop. Furthermore, myofibrillar trajectory was clear and the exposure of crossing angle between apical ascending segment and descending segment was ideal.

组3心脏解剖过程顺利，所有心脏均能按照心肌纤维的自然走行方向解剖出基底环和心尖环，最终展开成带状，心肌纤维走行方向清楚，心尖环升段和降段纤维之间的交叉角度显示清楚。

In system on chaos state, motion trajectory controlled by a equation is sensitive to initial conditions. For example, two trajectory from two close initial values were not very difference at short notice. But the distinct difference will presented consequentially after an enough long time.

混沌状态下的系统，按照某方程运行的轨道敏感地依赖于初始条件，例如从两个邻近的初值出发的两条轨道，在短时间内似乎差距不大，但在足够长的时间以后，必然呈现出显著的差别。

In order to improve penetrativity of hypersonic missile and enable air-launched hypersonic cruise missile to penetrate with skip trajectory, a new approach of generating positive angle of attack during reentry phase of trajectory was proposed. Some key parameters of realizing skip trajectory were found out, and the effects of these parameters on ballistic performance were discussed.

为提高高超声速导弹的突防能力，使常规布局空中发射的高超声速巡航弹能采用跳跃式弹道突防，采用了在导弹再入段附加相应的正攻角产生气动升力的方法，找出了实现弹道起跳的关键参数，讨论了这些参数对弹道性能的影响。

The fold line trajectory model is used to calculate the firing data of red land laser terminal-guided projectile.The experiments demonstrate that the fold line trajectory model has advantages as below.One is the fold line trajectory model can truly reflect the fly discipli...

试验结果表明，&折线法&弹道模型具有以下优点：一是模型能较为真实地反映&近区域&射击时末制导炮弹飞行规律；二是运用该模型决定末制导炮弹射击诸元，精度较高，完全能满足射击的精度要求。

The sightline control strategy for bad measure precision is developed, and the control methods for vertical direction, approach direction and station keeping are presented.(2)The safe approach velocities are investigated for cuboid, sphere and cone keep out zone.(3)The design method for optimal trajectory under safety constraint is developed. The cone and cuboid keep out zone can be described using line constraint, and then optimal trajectory design can be translated to line programming problem under line constraint.(4) The design strategy of collision avoidance maneuver is discussed, and the collision avoidance scheme is analyzed for V-bar and R-bar approach.The control and trajectory safety in departure phase are investigated.

1提出了测量误差较大时平移靠拢段的视线控制策略，给出了横向、纵向和悬停的控制方法；(2)针对长方体禁区、球形禁区和锥形禁区三种禁区形式，研究了V-bar逼近和任意方向逼近的纵向安全速度计算问题；(3)提出了安全约束下的最优轨迹设计方法，将冲量和有限推力作用下的最优轨迹设计问题转化为线性规划问题，并给出了将锥形和方形安全区域约束转化为标准线性约束的公式；(4)探讨了紧急避撞机动的设计策略，分析了V-bar和R-bar接近的紧急避撞机动方案。

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％。