Pre - pressure need further study because it involves many factors.
预压力与很多因素有关,需作进一步探讨。
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。
The calculation of the values involves so many factors that only a computer can cope with it.
这些数值的计算包含如此多的因子,以至于只有计算机才能对付得了。
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