包括车上传感器，路旁探测设施和自动轨道几何系统。
Examples include onboard sensors, wayside detection devices and autonomous track geometry systems.
轨道几何不平顺为平稳的正态分布和各态历经的随机变量。
The track geometry irregularity is a stable normal distribution and state-history random variable.
轨道几何状态检查是关系到铁路行车安全和旅客乘车舒适性的重要技术保障工作。
Inspecting the Geometry state of the track is an important work for the safety and comfort to the passengers.
轨道几何平顺状态是轨道结构部件综合性能的表现，直接反映了轨道质量状态的优劣。
Rail track geometric irregularities are the concrete embodiment of track structure deterioration, and give an expression to the comprehensive performance of track members.
论文重点分析了车辆运行速度、轮轨摩擦系数、车辆载重、轨道几何不平顺、偏载、轨距大小、车轮踏面形状等因素对脱轨的影响。
The influence of train running speed, wheel-rail friction coefficient, vehicle load, track geometric irregularity, partly load, gauge and the shape of wheel tread on derailment was emphasized.
现存的联邦铁路局轨道安全标准十分全面，对高达200英里/小时（约合322公里/小时）的速度指定了FRA1～9类这9种类型的轨道几何形状和欠高。
Existing FRA tracksafety standards are comprehensive and specify track geometry and cant deficiency for FRA Classes 1 through 9 at speeds up to 200 mph.
报告发现地球轨道上的垃圾成几何数增长。
但是打个比方，当人们试图利用代数和几何来理解太阳系的时候，他们只能够说明这些行星的轨道。
But as an analogy, when people were trying to understand the Solar System with algebra and geometry, they could only describe the planets' orbits.
只有掌握了车轮和轨道的轮廓型面，并将两者相结合，才可能掌握几何接触状况对铁路运营车辆的运行性能所产生的影响。
Only after getting the contours of wheels and rail, and combining the two together, the effect of geometric contact conditions on the running performance of operating railway cars can be obtained.
本文利用整体微分几何的方法研究了人造卫星的轨道控制和姿态控制问题。
The orbit control and attitude control problems of satellite have been studied in this thesis by use of global differential geometry method.
利用高清晰空间目标图像来获取空间目标的几何形态对于空间目标的观测和识别、未来位置的预测和轨道的确定等具有重要意义。
Using space object images with super-resolution to obtain their geometrical form is necessary to observe and catalog space object, predict their future position and determine their orbits.
利用球面三角形的几何关系进行了基于STK（卫星工具包）的小卫星轨道交会的规划和设计。
Small satellite orbital rendezvous is designed using the geometric logic of spherical triangle and the STK (Satellite Tool Kit) software.
轨道刚度变化同时影响着轮轨动荷载和轨道动态几何形位的变化。
The changing of track stiffness affects wheel-rail dynamic forces and track dynamic geometry performance simultaneously.
结果表明，动力学平滑能有效改善几何法轨道精度。
The results show that the dynamic smoothing can improve the precision of geometric orbits.
本文从数值方面详细分析了两种型面轮对和轨道在滚动接触过程的接触几何、蠕滑率和蠕滑力。
The contact geometry parameters and rigid creepages of wheelset and track in rolling contact are analyzed.
对硝基芳烃类衍生物进行半经验分析轨道MNDO计算，求得全优化几何构型和电子结构。
Semiempirical calculations at the MNDO level were performed on nitroaromatic compounds to obtain fully optimized geometries and electronic structures.
几何上证明了这种拦截的特征速度与最省燃料轨道的特征速度相同，并且给出了该方法的解的存在性条件。
It was proved that ?v of this interception coincide with that of minimum fuel transfer in geometry. The existence of solutions was studied.
摘要 ：使用距离多普勒模型进行SAR影象几何校正时，卫星轨道误差、系统成像参数误差和DEM高程的误差会影响几何校正精度。
Abstract : When using the Range-Doppler model for SAR image geometric correction, the error of satellite orbit, imaging parameter and DEM elevation will affect the geometric correction accuracy.
在B3LYP/6-311G计算所得的平衡几何构型基础上，分别根据静电势和分子轨道计算研究了分子中-NH2和-N（CH3）2的亲核性，并与偏二甲基肼和卤代烃反应的实验结果进行了对比分析。
On the basis of equilibrated geometrical structure obtained by B3LYP/6-311G method, the nucleophilicity of-N(CH3)2 and-NH2 groups are investigated by electrostatic potential and MO calculations.
依据成像几何分析通过泰勒展开公式推导并提出了新的姿态角运算方法，保证了低轨道姿态运算精度；
A new algorithm was developed throw the tailor equation based on the imaging analysis. The new algorithm can supply the high precise attitude data even in the low orbit.
依据成像几何分析通过泰勒展开公式推导并提出了新的姿态角运算方法，保证了低轨道姿态运算精度；
A new algorithm was developed throw the tailor equation based on the imaging analysis. The new algorithm can supply the high precise attitude data even in the low orbit.
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