| 摘要 |
<p>A tennis court of a normal size can be used simultaneously by two teams of children when divided transversally. Nets (A,B) are erected, serving two fields. The outer areas are provided with lines formed by slip proof rubber strips secured to the ground with pins guided through sleeves inserted into eyelets or with patches of Velcro(RTM). The strips are wound up when not in use on a drum fitted with a small handle for an easy release.</p> |
