| 摘要 |
A printed circuit board comprising, adjacent at least one of its edges and on at least one of its faces, conducting tracks adapted to co-operate with resilient contact members of a connector for receiving the board, the contact members being orientated in use parallel to the tracks, in which at least one of the conducting tracks has a concave cross section and is formed by a cavity in a rigid insulating support forming part of the board or in a male conductor associated with the board, the surface of the cavity having a coating of conducting material.
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