Moisture welts: Wrinkles in a paper roll caused by moisture absorption after drying.

水痕：纸卷在干燥后吸收水份而起皱的情况。

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Moisture welts: Wrinkles in a paper roll caused by moisture absorption after drying.

水痕：纸卷在干燥后吸收水份而起皱的情况。

youdao