本文阐述了双联滑移齿轮在适当传动出情况下，轴向移动一个齿轮宽度就可以进行变速的可行性及适用场合。
This paper brings out feasibility and applicability to make change drive of double step sliding gear by moving one gear width along axis under conditions of Corresponding ratio of gear.
正如所料，高速重载及无噪音齿轮传动要求齿轮有高的精度，高精度的齿轮加工成本大大增加。
As would be expected, gear manufacturing costs increase sharply with increase precision-as required for the combination of high speeds and heavy loads, and for low noise levels.
分析了齿轮噪声产生的主要原因及降低齿轮传动噪声的方法。
This paper analyses the main cause of gear noise and the way of reducing it.
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