primary track

The results of test and analysis on the data of ballast resistance,initial deflection were obtained in Qinghai-Tibet railway.

文章根据在青藏铁路现场试验获得的道床横、纵向阻力和轨道原始弯曲等设计参数的试验结果,对青藏铁路无缝线路轨道稳定性与钢轨强度进行了检算,并确定了锁定轨温。

The method of test and analysis on the data of ballast resistance、initial deflection were described carefully by the paper.

详细介绍了道床横、纵向阻力与轨道原始弯曲的试验方法和数据整理分析过程,获得了合理取值。

Using the stability theory of continuous welded rail tracks,this paper quantitatively analyses the extent of influence of roadbed lateral resistance and track primary curvature on the stability of tracks.

利用无缝线路稳定性理论，从计算入手，定量分析了道床横向阻力和轨道原始不平顺对无缝线路稳定的影响程度。

An optimal selection algorithm based on grey relational analysis is proposed to select the optimal group from multiple groups of satellite initial orbits,which are determined via various data sources by Space TT&C(Tracking,Telemetry and Command) Center.

针对航天测控中心利用各种数据源确定的多组初始轨道如何选优问题,提出了一种基于灰色关联分析的卫星初始轨道选优算法。

Theoretical analysis was proposed in the optimal selection of spacecraft initial orbits during the orbit injection phase,and an algorithm based on grey relational analysis was proposed to select the optimal initial orbit.

针对航天器入轨段,如何从多组初始轨道中选择一组最优轨道问题,进行了深入地理论分析,提出了一种基于灰色关联分析法的航天器初始轨道选优算法。