垂直穿孔的运行方向相反的文件，通过新闻传播。
Perpendicular perforations run in the opposite direction that the paper travels through the press.
平行穿孔运行在同一方向的文件，通过新闻传播。
Parallel perforations run in the same direction that the paper travels through the press.
平行穿孔运行在同一方向的文件，通过新闻传播。
Parallel perforations run in the same direction that the paper travels through the press.
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