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.
在温度和送料速度的协调控制下，通过调节气压参数可有效控制气孔结构。
With the cooperative control of drawing temperature and feed speed, the final hole structure can be effectively controlled by tuning the applied pressure.
下送布、针送布以及交替压脚上送布再加上超高的压脚冲程保证了良好的送料，以获得完美的缝纫效果。
The bottom feed, needle feed and alternating foot top feed in connection with the high sewing foot stroke ensure an excellent material feed, which is a condition for an impeccable sewing result.
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