压折痕和折页时要求使用一个模式纸型系统，因为硬的压痕线会使半透明纸在折页时产生裂痕。
When the pressure of creases and folds require the use of a pattern of printing system, because of indentation line will make translucent paper when in the fold.
压折痕和折页时要求使用一个模式纸型系统，因为硬的压痕线会使半透明纸在折页时产生裂痕。
When the pressure of creases and folds require the use of a pattern of printing system, because of indentation line will make translucent paper when in the fold.
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