7.Third process: After operated by the back forward gas baffler, the paper reciprocates to the drum of the third layer to perform flanging of the front side.
第
个过程：纸张
前推气挡板之作用，再往复至第
筒完成后
。
[
]
，缘，凸缘，外(缘)翻，翻口；制成法兰；孔凸缘加工机7.Third process: After operated by the back forward gas baffler, the paper reciprocates to the drum of the third layer to perform flanging of the front side.
第个过程：纸张前推气挡板之作用，再往复至第筒完成后。
6.Second process: After operated by the front forward gas baffler, the paper reciprocates to the drum of the second layer to perform flanging of the backside.
第三个过程：纸张后推气挡板之作用，再往复至第筒完成前。
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