换向噪声与刮刷噪声特性受到挡风玻璃干、湿与雨水状态的影响很大，而受速度档位的影响较小；
The nature of both types of noises is strongly affected by the degree of windshield glass wetness, while it is far less affected by the wiping speed.
传统的联合收割机行走速度调节是由驾驶人员通过档位和液压无级变速器来实现。
The control of walking velocity for traditional combine is realized by gear and hydraulic speed variator.
本文对拖拉机新产品设计或改进设计时如何合理地确定各档速度和档位排列顺序有一定的指导作用。
Each shifting speed and shifting arrangement are determined for directing the design of a new production of tractor or for the improvement of the design.
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