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轨道计算

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According to the actual requirements of the curve realignment after the existing railway speed increasing,the traditional theory of involutes is abandoned and the coordinate measurement is used to directly realign curves.

在保证拨正前后轨道长度保持不变的前提下,利用切曲差的关系表达式,自动计算半径和缓和曲线长度,并通过算例验证算法的可行性。

All the angular integrations and spin summations involved in the problem have been carried out explicitly, the energy is expressed finally as a sum of some radial integrations.

完成了所有的角向积分和自旋求和计算,自旋-其它轨道相互作用能最终用径向积分来表示。

In order to reveal the nature of reducibility of organic compounds and find theoretical basis for the selection of organic reductants, the electronic structure of studied organic reductants and related organic compounds has been calculated by means of HMO method、CNDO/2 method in quantum chemistry. It was discovered that the energy of the highest occupied molecular orbital of organic compounds has best correlation with their reducibility, and theoretical criterion for reducibility of organic compounds was presented.

为了揭示有机化合物还原性的本质,为有机还原剂的寻找提供理论依据,应用量子化学HMO法、CNDO/2法计算分析了研究的有机还原剂及相关有机化合物的电子结构特性,发现有机化合物的最高占据分子轨道HOMO能量与其还原性之间具有最好的相关性,据此提出了有机化合物还原性的理论判据。

Based on the characteristics of the DC traction power system in rail transit, a numerical model is set up to calculate the leakage current and the potential variation distribution.

摘要针对城市轨道交通直流供电系统特点建立了杂散电流的计算模型并进行了仿真。

The results indicated that the activation extent of nitrogen depends on the number of feedback orbitals.

计算结果表明,氮氮键的活化程度由Ru2对氮起反馈作用的轨道数目决定。

Electronic structure and frontier orbitals of 1 was calculated.

理论计算化合物1 的电子结构和前线轨道进一步验证了上述结果。

Using this model, dynamic responses of track structure when train passing through rail joints and transitions are investigated.

利用该模型对列车经过错牙和路桥过渡段时轨道结构的动力响应进行了分析,计算结果为既有线提速和新线建设提供设计依据。

The calculations on the binding energy and the population analysis of the ribose-Ln complexes were made by using the coordinates obtained from its single-crystal structures. Theoretical interpretions on the coordination between ribose and rare-earth metal ions were given by the results of the calaulation.

利用本论文得到的一系列的核糖—稀土配合物的单晶结构数据,对各配合物分子的结合能、配合物中各原子的净电荷布居以及稀土金属离子中各原子轨道在成键中的作用等方面内容进行了量子化学计算,并为核糖与稀土金属离子的配位作用提供了理论解释。

It can be seen from this article that the two methods have demonstrated the working capacity for calculation of frictional force and thermal load on surface of a hypersonic winged flight vehicle, which moves in dense atmospheric layers on a trajactory with stationary values of velocity head.

由文可见,对于在稠密大气层内,沿轨道运行头速度恒定的高超声速有翼飞行器,能够用本文所采用的两种方法计算其表面摩阻和热载荷。

The effective distance of measuring device on vehicle is from 5mm to 25mm. Through the simulation tests, if the space of track mark is 0. lm, the instrument can measure the speed ranged from 0 to 600km/h with an accuracy of ±0. lm/s.

对车载测速仪,其有效作用距离为5mm-25mm,经模拟测试,若轨道检测标志间距以0.1m计算,测量速度范围为0-600Km/h,测量精度为±0.1m/s。

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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。

You rap, you know we are not so good at rapping, huh?

你唱吧,你也知道我们并不那么擅长说唱,对吧?