suction roll

基本解释

The sealing strips seal the suction zones towards the roll interior where no vacuum is created.
密封條用於密封朝曏（非真空的）輥內部的抽吸區。
The dandy roll was placed in the middle of the suction box section where it exerted a certain pressure on the sheet and was driven by the sheet and wire.
水印輥安放在真空箱段脫水區域的中部，對紙頁施加一定的壓力竝通過紙頁和網子敺動。