| 摘要 |
A structure and method for increasing a locking friction force on a circuit board allow a connecting face to be disposed on at least one of upper and lower faces of a substrate at a clamped position, the connecting face having a multiple relative indented portions and raised portions interlacing structure so as to allow the connecting face to have a larger friction coefficient. Whereby, when the connecting face is clamped, a larger friction force is exerted thereon and a displacement relative to a clamper is rather not yielded.
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