| 摘要 |
<p>This tennis racquet comprises two different lengths of thread 1, 2, possibly in two colours, for the longitudinal strings and/or the transverse strings. The space between one string of the thread 1 and one of the two adjacent strings belonging to the other thread 2 may be different on the left and on the right d and D. The transverse strings 9 may pass successively above a string 1 and below a string 2, etc. As a variant, they can pass under a pair of strings of the threads 1 and 2, then over another pair of strings of the threads 1, 2, etc., in order to reduce the distance d to zero. <IMAGE></p> |
