变速箱采用常啮斜齿轮传动，结合套换档、双杆机械操纵，前进五档、后退四档。
Transmission : normally meshed helical gear drive, coupling sleeve shift and two lever operation. The transmission has five forward speeds and four backward speeds .
在一个手动变速器里，当你操纵换挡杆从一个档位到另一个档位时，齿轮沿轴向滑动，使大小不同的齿轮进行啮合从而满足不同的传动比的需要。
In a manual transmission, gears slide along shafts as you move the shift lever from one position to another, engaging various sized gears as required in order to provide the correct gear ratio,.
本文对机床齿轮变速的全液压与电液操纵机构的设计作了系统介绍。可供机床设计与教学参考。
This paper describes systematically the design of all-hydraulic or electrohydraulic variable speed control mechanism, providing a reference of designing machine tools and related teaching.
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