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And the compare between the result of calculation and that of test shows that the method proposed in this paper can be used to calculate the environmental vibration produced by elevated railroad traffic.

计算结果与实测结果吻合较好,表明本文的计算模型和方法可应用于分析计算高架轨道交通引起的环境振动。

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。

The energy levels of free metallic ion were calculated with a 13 parameters model including the 2-body and 3-body interactions. The Stark energy levels of crystal field were calculated using the model proposed by Newman based on 1 electron orbital approximation The f-f oscillator strength calculation includes the contribution of electrostatic-induced, ligand polarization, vibronic-induced, magnetic dipolar transitions.

其中,自由f离子能级计算采用包括双电子与叁电子组态相互作用的二三参数模型,晶体场Stark分裂计算采用单电子轨道近似,用Newman角叠加模型计算晶体场参数。f-f跃迁振子强度计算包括静电诱导偶极跃、配体极化偶极跃、振动诱导电偶极跃迁及磁偶极跃迁的贡献。

The analytical method is always used due to the large amount of the objects and not very high accuracy of forecasting. A method based on the position and velocity derived from the mean orbit elements directly is given, which is to avoid the problem of singularity in calculating the periodic terms of orbit elements variation, thus the process and software can be simplified.

在已有分析法得到t时刻平均根数的基础上给出一种轨道预报方法,由t时刻的平均根数给出该时刻卫星的位置和速度,在此基础上将地球非球形引力摄动的周期项直接用卫星直角坐标的位置和速度分量表示,这样可以避免在计算轨道根数变化的周期项时出现的奇点问题,从而对根数的选择无特殊要求,可适用于各种轨道,简化预报程序和相应的软件,提高预报效率。

The line that passes through the center of the Earth linking the perigee and apogee, known as the line of apsides, itself rotates in the orbital plane at a speed that depends on the geometry of the elliptical orbit and the inclination of the orbital plane to the equator.

经过地球中心,连接近地点和远地点的线称为apside线,卫星在轨道平面上以某个速度旋转,这个旋转速度根据椭圆轨道以及轨道平面到赤道的倾角的几何学来计算。

Herman and S.Skillman with Hartree method. inspected, sysetmatically the change of energy at atomic Valence Orbital from helium to lawrencium.

Skillman用Hartree方法计算得到的原子轨道能的数据(1963)为依据,系统地考察了从氦到铹原子的价层轨道能量变化情况,进而探讨了原子轨道的钻穿作用问题。

Within a click the AlphaWipe Tracks Cleaner securely erases your internet tracks, application tracks, computer activities and programs history information stored in many files and unevident places on your computer.

在一个点击alphawipe轨道清洁安全的清除您的Internet轨道,轨道上的应用,计算机的活动和节目的历史资料储存在许多文件和unevident地方,在您的计算机上。

In order to investigate the dynamic performances of the curved track structure,the dynamic properties of the strengthened track and the unstrengthened track were compared based on system engineering theory and vehicle-track coupling dynamics.

基于系统工程思想,运用机车车辆-轨道耦合动力学理论,对采取了强化技术对策后的山区铁路小半径曲线轨道的动力性能进行仿真计算,并与强化前轨道结构动力学性能进行了对比分析。

By running the program based on vehicle-rail coupling dynamics, compute the dynamic response of elastic sleeper ballasted rail and common sleeper ballasted rail under same working condition.

利用车辆-轨道耦合动力学理论所编制的程序,计算弹性轨枕有碴轨道与普通轨枕有碴轨道在相同工况下的动力响应。

Based on the wheel-rail dynamic coupling analysis, the dynamic force loaded on the track bed by different subway tracks is gained which is used in the finite element model.

将轮轨动力耦合分析获得的不同地铁轨道作用在道床上的动荷载作为有限元分析模型中的作用力,计算分析了不同轨道结构地段的地表振动传播特性,结果表明:在50 m范围内浮置板减振效果明显,在50 m以上轨道减振形式对地面振动影响不明显。

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推荐网络例句

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

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。