| 摘要 |
A roller train in a carding machine comprises first, second and third card-clothed rollers, the second roller having two sets of teeth pointing in opposite directions, and the relative surface speeds of the rollers being such that one set of teeth on the second roller has point-to-point action with the teeth in the first roller and the other set of teeth on the second roller has point-to-point action with the teeth on the third roller.
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