Even in the same paper as the paper format, the fan-shaped expansion is not the same, dual machine paper throughtype dilatational than a single machine.

• 即使是同样质量的纸张由于纸张幅面差别，其扇形蔓延水平也是不差别的，双幅机的纸张扇形蔓延本体比单幅机惨重得众。