Example of protocol: 2 minute levels, increase of speed by 1km/h per level, start test at 8km/h.
方案的例子：2分钟的阶段，每个阶段以1km/h增速，从8km/h开始。
With further increase of speed, the ribbon thickness reduces slowly.
随着快淬速率进一步增高，薄带的厚度的下降趋于平缓。
With the increase of speed and package size, the loads on the winding part of the fly frame are increased correspondingly.
随着粗纱机速度的提高、卷装的增大，卷绕部分消耗的功率也相应增加。
With the increase of speed, aerodynamic problems of such trains are emerging. Aerodynamical analysis has got to be strengthened.
随着速度的增加，高速列车空气动力学问题也显露出来，需要加强对气动特性的分析。
Therefore, a series of research tasks emerge from it. The dynamic performance of train system not only affects the increase of speed, but also the ride comfort and running safety.
列车系统的动力学性能不仅直接关系到列车运行速度能否提高，而且影响到列车的乘坐舒适性和运行安全性。
Therefore, a series of research tasks emerge from it. The dynamic performance of train system not only affects the increase of speed, but also the ride comfort and running safety.
列车系统的动力学性能不仅直接关系到列车运行速度能否提高，而且影响到列车的乘坐舒适性和运行安全性。
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