| 摘要 |
A windsurfer sail where the top section of the mast of the sail is arcuately curved a substantial amount where the longitudinal center axis of the top edge of the mast is parallel to the upper surface of the sailboard. This top section of the mast is also capable of a limited amount of pivoting movement relative to the remaining portion of the mast so that the uppermost area of the sail can be oriented in the maximum wind-catching position.
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