| 摘要 |
The improved playing wall consists of a multi-layered wall that is made in two sections. Each section has two outer surfaces made of two layers of a fiberglass polyester resin which sandwich a layer made of masonite. An impregnated paper honeycomb inner support section is located between the two outer sections. U-shaped supports extend around the periphery of each section of the wall, on all four sides. On the vertical sides of each wall, a tube is placed within the channel of the U-section and is secured to that section of the wall. Support fins, which flare out on either side of the wall, are secured to the tube.
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