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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In the unwinding process the dynamic radius of the paper roll is important for deciding the periods to replace the paper roll and controlling the tension of the paper.

放卷过程中，纸卷的动态半径与时间之间的函数关系对确定纸卷的更换周期和纸的张紧力控制具有重要意义。

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Overall, almost three in five people say they try to limit their usage of paper including facial tissue and kitchen roll—to save money.

总体而言，近五分之三的人表示他们会尝试限制纸的使用，包括面巾纸和厨房用纸——为了省钱。

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But Ridding says the paper is working on a micropayments system which they expect to roll out as early as next year.

VOA: standard.2009.12.05

So how many time do you think-- you all have a piece of paper in front you-- how many time do you think you need to roll over the piece of paper ? for the piece of paper to reach the moon?

你们认为需要折多少次-,你们面前都有一张纸-,你们认为需要将纸折叠多少次,才能碰到月亮？

哈佛公开课 - 幸福课课程节选

"Voting is slow in just about all the polling stations, but especially so at the polling stations where they don't have any laptop computers to verify the potential voters on the actual roll, which means they have to go to the physical paper.

VOA: standard.2009.11.27

Lamarr and Antheil proposed using a punched-paper roll like that of a player piano.

ECONOMIST: Player-piano pioneer

On our desks, we had the essential supplies of the time: a bag of cookies, a pile of letters, an electric typewriter, a bottle of Liquid Paper and a roll of toilet paper.

FORBES: Swelling Nostalgia For Gold-Backed Money And A Balanced Budget Amendment

The group prescribed several "finesse" cuts like slicing a grape in half or dicing a cardboard paper towel roll into as many slivers as possible, the way a chef slices an onion.

WSJ: World Championship Cutting Competition Features Knife-Wielding Experts