China is only about halfway through a 15-year plan to build a total of nearly 10,000 miles of high-speed track connecting 24 major cities.
中国计划用15年时间建成总长近16,000公里、连接24个主要城市的高速铁路网，这一计划目前只完成了近一半。
The effect of track regularity on sled-track dynamic interaction is very strong. The track regularity is one of the mainly considered questions on the design of high-speed track.
轨道平顺度对橇轨耦合动态效应影响很大，轨道平顺度是高速滑轨设计重点考虑的问题之一。
Loading of trains is a complex issue. It involves many factors such as the axle weight, suspension system, traveling speed, track structure, geometric irregularity of lines and so on.
列车荷载是一个很复杂的问题，同时涉及列车轴重、悬挂体系、行车速度、轨道组成、线路平顺等等因素。
Loading of trains is a complex issue. It involves many factors such as the axle weight, suspension system, traveling speed, track structure, geometric irregularity of lines and so on.
列车荷载是一个很复杂的问题，同时涉及列车轴重、悬挂体系、行车速度、轨道组成、线路平顺等等因素。
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