| 摘要 |
<p>The structure is used to provide cover for a stage, bandstand, or similar outdoor structure. It forms a roof which can be built up and dismantled from a flat piece of ground. Use is made of two or more front uprights firmly connected to the ground. Their top ends are tiltable the same way from a vertical position down to the ground, and vice versa. They are used together with ground-connectable rear uprights and a series of interconnectable crossbearers, connectable to front or rear uprights. This is stable, and can quickly afford weather protection on sites only occasionally used.</p> |
