随着轮齿高度的增加，挂钩牵引力会随之增大，车轮的最大牵引效率有所降低；
The results show that when increasing the wheel load, drawbar pull accordingly increase and the tractive efficiency show downtrend before uptrend.
随着轮齿高度的增加，挂钩牵引力会随之增大，车轮的最大牵引效率有所降低；
The results show that when increasing the wheel load, drawbar pull accordingly increase and the tractive efficiency show downtrend before uptrend.
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