轨道计算

We investigated alcohol, acid, amine, ester and several kinds of normal metal clusters by using the HF-LCAO-MO method for the lubricate mechanism of different polarity bases, through the frontier orbital energy levels and its composition.

用HF-LCAO-MO方法计算醇、酸、胺、酯4类油性剂和常见金属的原子簇模型，从前线轨道能级、分子轨道组成等方面研究了不同极性基团的润滑机理。

It is given that the connection between interception probability and orbit intersection angle as well as time error under the instance that the main body of objective satellite is destroyed. The choice of orbit intersection angle is expatiated when time error exists by simulation calculation.

研究了对目标卫星主体毁伤情况下，轨道交角和交会时间偏差与拦截卫星拦截概率之间的关系；阐述了有一定交会时间偏差时，轨道交角的选择情况，并对其进行了仿真计算。

The generalized relationship which correlates the geminal coupling constants with the hybrid orbitals, net atomic charges, bond lengths and bond angles had been employed to obtain one concrete relationship for calculation of the geminal coupling constants 2JCaCbH in aromatic systems.

在前文工作的基础上，本文结合MNDO分子轨道方法和最大键级杂化轨道方法研究得到了计算苯及其取代物中孪位偶合常数2JCCH的多元级性关系式。

The automorphism groups of the two posets are given and the numbers of orbits of the automorphism groups are counted. At the same time, the number of words in every rank of the posets is obtained.

本章给出了偏序集P和Q的自同构群，计算了在各自的自同构群作用下轨道的个数以及每一轨道中元素的个数，得到了偏序集中每一秩中元素的个数。

The results show that high inclination circular high orbit(150 km or 200 km) has better performance,with its orbit lasting more than one yea...

大量的仿真计算表明，高倾角、圆轨道的中低轨(150 km或200 km)绕月飞行器具有相对稳定的轨道演化特征，在不进行任何调整的情况下，其轨道持续运行时间超过1 a。

According to the characteristics of altimetric satellite's orbit, this thesis systematically studies the theory and methods of satellite altimeter data processing. The content includes the analysis of satellite's radial error in time domain and in space domain, the spectra characteristics of collinear tracks and crossover points distribution, the integral method and the computation and analysis of Topex altimeter data.

本文针对测高卫星轨道及地面轨迹所独有的特点，较系统地研究了卫星测高数据处理的理论与方法，内容涵盖了测高卫星径向轨道误差的时域特征分析与空域特征分析、共线轨迹与交叉点分布等的谱特征、整体求解法的研究以及Topex测高数据的初步计算与分析。

The essay discusses the calculation and selection of body-form co-efficient for double contact lines suspension in urban mass transit, analyzes the affection from wind displacement of contact line, calculation of span , curvature of mast and calculating load and recommends that the shield between contact lines shall be considered for wind load of multi-contact lines.

对城市轨道交通双导线接触网悬挂风载体型系数进行了计算选用方面的探讨，并对接触线风偏移、计算跨距、支柱挠度和计算荷载的影响进行了分析，建议多导线的风载情况应考虑导线间的屏蔽作用。

On the basis of HPLC analytical results, a reaction mechanism between chlorine dioxide and phenol had been proposed. The rate control step in the process of reaction was studied by using ab initio method. Opmital geometry of every species in reaction was caculated by the available gratient optimum software. The result of harmonic vibrational frequencies indicated that phenolate radical was a stable intermediale product.

根据对ClO〓氧化苯酚后的高压液相色谱图，提出了ClO〓与苯酚氧化反应的机理，并对反应机理中的速度控制步骤进行量子化学理论剖析，利用梯度优化软件计算了参加反应物种的平衡几何构型，振动频率分析的结果表明：酚氧自由基是稳定的反应中间体，利用ab initio计算软件计算了参加反应物种的总能量，酚盐负离子中的氧原子电荷密度，布居数和前线轨道。

This indicates that for the calculations of outer valance orbitals of F22, the 6-311++G〓 basis set is near saturated and employing larger basis set will not improve the calculation much.

在基组方面，使用AUG-cc-PVQZ基组的计算比使用6-311++G〓基组的提高不了多少，这表明6-311++G〓基组对于F22外价壳层轨道的计算来说已经接近饱和，使用更大的基组对于理论计算意义不大。

Using the models, the author has also calculated the vibration response to high speed railway vehicles of three types travelling over simply-supported beam bridges with various span lengths respectively. Based on the analysis of the computation results, the concept of resonance velocity of a bridge under a high speed running vehicle is present, and it is pointed out that comparatively great vibration of bridges on high speed railways is caused by bridge resonance resulted from the static force pulsating. In a vehiclebridge coupling vibration system, the damping constant of the axle spring is the main factor affecting the response variable of bridge velocity resonance, and the influence of track irregularity on bridge vibration on high speed railways is rather smaller.

利用所建立的计算模型，计算了三种形式的高速铁路车辆通过各种跨度简支梁桥结构时的振动响应，对所得到的计算结果进行了详细的分析，提出了高速行车下桥梁共振速度的概念并指出高速铁路桥梁产生较大振动的原因是静力脉动引起桥梁共振造成的；通过研究车—桥耦合振动系统方程的参数后指出，在车—桥耦合振动系统中，车辆—系阻尼的大小是影响桥梁速度共振时响应大小的主要因素，轨道不平顺对高速铁路桥梁振动的影响较小。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失