摘要 |
<p>The inflatable playing field is suitable for all kinds of field games. It is simple to erect and may be used on an uneven substructure. When it is folded up the playing field is easy to transport onto site. It consists of a playing field chamber held under excess pressure and closed on all sides, with upper side or roof serving as the playing area. The chamber can be surrounded by a blister- type side chamber, under similar pressure, laterally bounding the playing area. There may also be a substructure chamber underneath. Only one or a few compressors are needed for setting up the unit, quickly and at low cost.</p> |