查询词典 orbit calculation

Secondly, three kinds of mathematics model of optical vortex beams were introduced here. Then the propagation dynamics of optical vortex beams through the non-axis symmetry system is studied, this chapter includes the introduction of the symmetry vortex beam and the non- symmetry vortex beam, the deduction of the Collins diffract integral formula for the non-axis symmetry system, and the transformation of the vortex beam passing through the non-axis symmetry system has been described by using the numerical simulation. Then the general calculation for the orbit momentum of vortex beams, the matrix form for the orbit momentum of vortex beams, and the photon method to describe the orbit momentum of vortex beams are also introduced here. Finally, the interference about optical vortex beams was studied.

本文对涡旋光束进行了较为全面的介绍和研究，主要内容包括：（1）光学涡旋光束的基本理论，主要是介绍了单个光学涡旋光束在柱坐标中的一些表征，涡旋光束的奇异相位和光学涡旋的相位结构；（2）光学涡旋光束的三种数学模型；（3）光学涡旋光束在非轴对称光学系统中的传播动力学，其中介绍了对称涡旋光束与非对称涡旋光束，推导了非轴对称光学系统的 Collins 衍射积分公式，并利用计算机模拟图描述了对称涡旋光束经过非轴对称光学系统后涡旋形态的改变；（4）涡旋光束轨道角动量的一般计算，涡旋光束轨道角动量的矩阵形式，光子法描述涡旋的轨道角动量；（5）涡旋光束的干涉。

Chapter 3 analyzes numerically the effects for orbit calculation caused by orbital perturbation, parameter error and so on. A precise mathematical model of orbit calculation is given.

第三章通过数值法分析了各项轨道摄动和参数误差等因素的对轨道计算的影响，给出了精确的月球探测器轨道计算数学模型。

Some concepts about the reliability are described, and the method for calculating the reliability of system is provided by making linear substitution. While taking Stochastic Finite Element Method into the reliability calculation, a Nonlinear SFEM model is founded, and methods to resolve some problems in SFEM calculation are given. So as to the calculation of the force boundary, a method in FEM is provided for sabot pressure calculation, base of this, the numerical calculation model is carried out.

给出了弹丸发射强度可靠性计算中的一些理论和概念；给出了串联系统可靠性的逐步线性等效计算方法；将随机有限元方法引入可靠性计算中，建立了弹丸发射时的非线性随机有限元计算模型，并给出了计算中的一些问题的处理方法；在随机有限元的载荷边界的计算中，提出了弹带压力的有限元计算方法和在有限元求解思想上的数值计算模型。

According to the algorithmic characteristics of video coding, general video decoder can be classified by three classic tasks. First is the low-leveled task for simple control, which focuses on calculation. It is called dense-calculation task when the requirement for calculation is higher. Second is the data-dependence task for simple calculation but sophisticate control, which belongs to middle-level task. More sub-states exist inside the task and the transition of the sub-states depends on input data and lacks of rules. Third is the simple-system task, part of advanced tasks, with simple calculation but no rules, the complexity of which mainly lies in the control of multi-tasks to complete certain function coordinately.

根据视频的编解码算法特性，一般的视频解码器可以分为三种典型的任务：以运算为主，控制简单的低级任务，当运算要求很高的时候我们可以称之为运算密集型任务；运算简单，但是控制复杂，任务内部子状态繁多，而且跳转依赖于输入数据而无规律，这类任务我们可以称之为数据依赖型任务，属于中级任务；运算简单而无规则，复杂度主要集中在控制多个任务协同进行以完成某一特定功能的简单系统型任务，属于高级任务。

Especial, forv=36 and 76, the methods to construct D_(3×4)K_(36 and D_(3×4)K_(76 are differentfrom the methods used above. The above small designs are constructed byusing complete orbit and abelian group while the D_(3×4)K_(36 is constructed byusing short orbit and the D_(3×4)K_(76 is constructed by using short orbit andnonabelian group.

特别对于υ=36和υ=76这两个值，我们构造时用到的方法与我们前面构造小设计时用到的方法不同，前面我们构造小的设计时，都是基于完整的轨道和Abelian群的，但对于这两个值我们是用短轨道和非Abelian群进行构造。

The cause of the earth tide force is its elliptic orbit movement. There is the tide caused by the earth on the moon because the earth is the focus of the moon moving orbit, but there is not the tide caused by the moon on the earth because the moon is not the focus of the moving orbit of the seawater on the earth.

地球的潮汐力是由椭圆轨道运动产生的，由于月球的轨道运动是以地球为焦点，所以在月球上可以产生受地球影响的潮汐，而不可以产生相反的潮汐，因为海水或岩浆没有以月球为焦点的轨道运动。

To understand the hyperbolic motion of the probe and give necessary orbit information not only the discrete positions to both ground-base or satellite autonomy device, we studied the variation of hyperbolic orbit and gave the variation equations like that of elliptic orbit.

这段轨道相比其它段虽然很短，但却是实现最终探测目标的关键弧段。为了更好地了解探测器的在这一关键弧段的运行状态，给地面测控系统或是星上自主设备提供必要的轨道信息，而不仅仅是探测器在一些孤立点上的位置和速度，有必要对双曲线轨道及其变化特征进行研究，给出类似于椭圆轨道及其变化的一些基本规律。

If the elliptical orbit, the orbital half-length l Drive; if the parabolic orbit, is infinity; if hyperbolic orbit, for a l negative.

若是椭圆轨道，为轨道半长l径；若是抛物线轨道，为无穷大；若是双曲线轨道，为一l负值。

Orbit train detection, train orbit before the signal, information processing system will be collected signal processing, the corresponding train sentence parking orbit.

详细说明：列车入轨检测，列车入轨前发出信号，信息处理系统将采集信号处理，判决列车进入相应轨道停车。

Comparison between the numerical results in earth orbit and that in lunar orbit shows the characteristics of the periodic distribution for thermal parameters of the solar array in lunar orbit, which will provide powerful references for the design of the solar array and the whole lunar satellite.

计算结果与地球卫星的相应数据进行比较，明确了月球轨道上电池阵所得外热流以及温度的周期分布特点，为月球卫星上太阳电池阵以及整个卫星的设计提供了有利的数据参考。

If you were not , and OS X just booted normally, have no fear.

如果你没有，和OS X刚刚启动通常，没有恐惧。

I only want to preserve our all .

我只想保存好我们的一切