| 摘要 |
An end extender comprises an assembly of plates 1, 2, 3, 4, 5, 6 connected at right angles in such a way as to form eight trihedrons with triple right angles, and means 7, 7a, 7b for connecting this assembly to the end of a headline. Owing to its shape, this extender offers considerable drag whatever its angle. <IMAGE> |
