| 摘要 |
A rolling device includes a frame, a rotatable member, a roller and an operating member. The frame is configured for being attached to a device enclosure. The rotatable member is secured to the frame and rotatable about a first axis relative to the frame. The roller is secured to the rotatable member and rotatable about a second axis parallel to the first axis. The operating member is secured to the rotatable member and rotatable about the second axis and capable of rotating the frame about the first axis.
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