亦称慧星
Also known as comets
以上为机器翻译结果，长、整句建议使用 人工翻译 。
箭形印记：是照相凹版印刷的瑕疵。印刷品上带有像箭头的印纹。亦称慧星印记。
Arrow: Printing fault in gravure which appears as a mark in the shape of an arrow head on the print. Also called comet.
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