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- Stochastic track irregularity 轨道随机不平顺
- Acording to the interaction between wheel and track, and considering the track irregularity, the dynamic equilibrium equations of the VBS are derived. 根据轮轨间的相互作用,并考虑轨道的不平顺,推导了车-桥系统的动力方程。
- The study indicates that a combination of track irregularity and high-speed running of the train increases rapidly the response amplitude. 研究表明，较差的轨道不平顺状态及列车高速运行的组合情况下，轨道振动响应幅值将迅速增大。
- Based on the stable character proving of the specimen,we used FFT methods to evaluate the whole specimen space and used MATLAB soft to get the PSD of track irregularity. 基于轨道高低不平顺样本的总体平均,对所得到的谱密度进行频率平滑,并与我国一级铁路干线的谱密度曲线进行了对比分析。
- Given the same random phase, the simulation of the sixth grade and fifth grade track irregularity PSD of U.S. railways shows the level of difference between them obviously. 该方法还可对美国轨道线路五级谱和六级谱进行数值模拟，在随机相位一致的情况下，直观地反映出不同轨道线路谱等级在时域波形上的不平顺差异水平。
- Unfortunately, the roller rig con not any directly simulate the track random i uts, because up to now there are not any standard track irregularity ectral in China. 另外，由于机车车辆系统，包括轮轨关系，实际上是非线性的，而机车车辆非线性蛇行失稳临界速度有别于线性系统，它与线路的激扰有关。
- By analyzing PSD of newly-built railway track irregularity,we can learn better about the state of track regularity and it profits instruct the track construction and railway maintenance. 通过对新建铁路轨道不平顺谱密度的分析,可以了解轨道平顺状态,有利于指导轨道施工和线路养护等作业。
- Maximum track irregularity is the evaluate index in emergency maintenance and standard deviation of section track irregularity is the evaluate index in track maintenance machine work. 轨道不平顺最大值用于紧急补修评价指标,区段的标准差用于大型养路机作业的评价指标。
- Analyzing from the vibration of EMS vehicle bogie exited by track irregularity, this paper analyzed the changing characteristic of suspension air gap of suspension electromagnetic iron. 该文从常导磁悬浮车辆转向架在轨道不平顺激扰下的振动分析入手,分析了悬浮电磁铁悬浮气隙的变化特征。
- By the contrast analysis, it is found that ballastless track irregularity is better than ballasted track irregularity, especially track vertical profile irregularity and track alignment irregularity. 通过对比分析，发现无砟轨道不平顺优于有砟轨道，高低和方向不平顺尤为突出；
- Research purposes: By analyzing the effect on impact force between wheel and rail by track irregularity,technical evidences on limit of irregularity on rail welded joints are provided. 研究目的:为了研究轨道不平顺对轮轨作用力的影响,从而为钢轨焊接接头不平顺限值提供技术依据。
- The gas flow fields were simulated by a Reynold's stress Transport Model(RSTM) and the stochastic tracking approach was used for simulating the trajectories of particles in a turbulent current. 在数值预测时,气相场采用雷诺应力输运模型,应用随机轨道模型来模拟湍流流场中颗粒的运动轨迹。给出了不同温度条件下旋风分离器的压力损失和分离效率,并与实验数据以及经验模型的数据进行了比较。
- Stochastics track the positioning of daily closing prices within the daily range. 该指数的主要研究对象为日波动区间内的收盘价。
- Nonlinear track irregularity forecast model 轨道不平顺非线性预测模型
- Track irregularity power spectrum density 轨道不平顺功率谱密度
- Our pilotless rocket enters the track of the earth. 我们把一个无人驾驶的火箭送入了地球的轨道里。
- This rough track will soon be a metalled road. 这条坑坑洼洼的路不久就要铺上碎石了。
- I'm trying to track down my old Aunt Maud. 我正试图寻找到我那年迈的婶婶莫德。
- The cyclist went at full sail along the track. 自行车手沿着跑道全速前进。
- She tested the whole class on irregular verbs. 她对全班学生进行不规则动词测验。
