| 摘要 |
A string comprises an elongated member having a plurality of protuberances extending outwardly therefrom. These protuberances include a first set of protuberances which are disposed along a first perimeter of the elongated member. The plurality of protuberances also includes a second set of protuberances which are disposed along a second perimeter of the elongated member. Each of these protuberances of the second set is offset from each of the protuberances of the first set. In particular, the two sets of protuberances are positioned so that they are substantially parallel to respective radii which are in the opposite set of protuberances and which bisect consecutive ones of the radii with which the protuberances within that opposite set are associated. The line forms an improvement in an article for imparting spin to a ball of the type including a framework having a handle and a hoop extending from one end of the handle.
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