采用扇形不完全齿轮传动送料轮轴上的齿轮来完成，上、下滚轮的转速相同，但旋转方向相反。
The gear wheel is used to complete the rotation speed of the upper and lower rollers, but the rotation direction is opposite.
传统的平行轴外啮合斜齿轮在啮合传动过程中，两齿轮的转动方向是相反的。
During traditional helical gears of parallel axle with external engagement engage, the direction of rotation is converse.
系统各齿轮都具有安装误差时，各齿轮副承载情况受误差累加或相反作用的影响。
When every gear has different installation errors, the load situations are influenced by the error accumulation and opposition.
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