The news has prompted concerns on social media about what appears to be a growing trend of train track photography among teens.
这一消息随即在社交媒体上引起了对越来越多的青少年在铁道上拍照这一趋势的关注。
As Zack drew a sweeping curve of train track, his hand knocked over the jar of water.
当扎克画了一个火车轨道的曲线时，他的手打翻了水罐。
Think of a train track and moving train; does the world pass by while we sit still, or is it the reverse?
境随心变，还是心随境变? 如同铁轨和它上面奔驰的火车，当我们静静地坐在列车上时，是窗外的世界不断离我们远去，还是我们正在远离它们？
In this paper, the fundamental problems in the calculation of transverse vibration of train bridge and train track time varying system are expounded.
本文论述了车桥及车轨时变系统横向振动计算中存在的根本问题。
In the paper, a research on neural network used in train track dynamic system is presented.
本文中研究了神经网络在列车轨道动力学中的应用。
Train track occupancy recognition is to determine if the train is passing over a switch and to supply reliable information for train positioning system and train control system.
列车轨道占用识别目的是在平行的多轨道区域识别列车所占用的轨道信息，为列车定位子系统或控制系统提供可靠的信息。
The fundamental problem in the establishment and solution to the spatial vibration equation of train-track (bridge) time-varying system at home and abroad is analyzed in detail.
分析了国内外在列车-轨道（桥梁）时变系统空间振动方程的建立及其求解过程中存在的根本问题。
The fundamental problem in the establishment and solution to the spatial vibration equation of train-track (bridge) time-varying system at home and abroad is analyzed in detail.
分析了国内外在列车-轨道（桥梁）时变系统空间振动方程的建立及其求解过程中存在的根本问题。
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