| 摘要 |
An artist canvas frame comprises the usual rectangular frame members attached at four corners and having a canvas stretched around the periphery and held in place by staples or some other suitable means. To improve the stability of the frame a brace is provided substantially midway transversely across the back of the frame in one or both directions and is held in place by movable plastic socket members on each respective end of the brace and each socket member comprises a small rectangular tube having opposed side members extending therefrom fitted over the inside faces of opposed frame members, known individually as stretcher strips or stretcher bars.
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