轨道计算

Research on parameters of mechanical model for high speed railway truck is performed and the calculated formulas and the value ranges corresponding to these parameters are given in this paper.

对高速铁路轨道结构力学模型中的参数进行了研究，给出了各参数计算公式和取值范围。

In NWFM,to solve self-consistently the set of DFT Kohn-Sham equations,nuclear weight function is employed for numerical solution of multicenter integra-tion,which decomposes the problem of three dimensional integration to a sum ofone-center,atomic-like integrations.

首先介绍如何利用线性组合的原子轨道方法求解密度泛函理论中的K-S方程；接着详细地说明了核权重函数的概念，并列出了两种常用的核权重函数形式，同时阐述了如何利用核权重函数求解包含多中心积分的矩阵元以及复杂的三维泊松方程以获得电子间库仑势的方法；然后给出了求解矩阵元、有效势以及体系总能的具体数值计算公式。

An experiment was conducted using the bond stress of the anchor agent, the corrosion degree of the screw spike and the eccentricity as the variables to test the withdraw resistance of the screw spike. The multiple regression analysis shows that three main factors have influence on the anchor withdraw resistance of the screw spike.

同时，以锚固剂的结合应力、螺纹道钉的锈蚀程度和偏心度等3个因素为变量对轨道螺纹道钉抗拔力进行实验，采用多元回归分析的方法对实验数据进行计算分析。

Considering the effect of current profile, a simple model was adopted to calculate the rail and armature joule heating of a small-scale electromagnetic rail gun after a single shot.

考虑了脉冲波形的影响，采用简化模型计算了自行设计的一种小型电磁轨道炮在单次发射后金属导轨和电枢中的焦耳热。

City ; urban tranffics ; air conditioning/railcar ; heat load ; calculation parameters

城市；市区交通；空气调节/轨道车辆；热负荷；计算参数

For improving the performance in flight of a pilotless aircraft, this paper striving for the optimal climb trajectory of the pilotless aircraft in the vertical plane using maximum principle.

弓言关于飞机飞行性能优化的研究成果已不断地用于飞机飞行性能计算和轨道设计中&&，学者们富有成效的工作对这一领域的发展起到重要推动作用。

He based this relationship, using astronomical parameters calculated that each of their counterparts in Gua stars the average orbital velocity and density values were a secret.

他依据这个关系，利用天文参数进行计算，证明出每一对应卦位所属星体的平均轨道速度和密度均分别为一个密值。

The slightest miscalculations in trajectory can spell doom for a successful space mission.

对轨道的细小的计算错误可以意味着对成功的太空任务的灭顶之灾。

The slightest miscalculations in trajectory can spell doom for a successful space mission .

对轨道的细小的计算错误可以意味著对成功的太空任务的灭顶之灾。

The slightest miscalculations in trajectory can spell doom for a successful space mission .

对轨道的细小的计算错误可以意味着对成功

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。