| 摘要 |
<p>The tank, of synthetic material, has a vent pipe (9) and ribs for hooking on to a support. The vent pipe is along part of a top edge (3) and is of the same material and acts as the hooking rib. Near the top edge one of the tank sides forms a long cavity (5,6). The base of this is welded on the other wall and makes a pipe leading, at one end (11b) to the tank and, at the other end, (11a) outside. Along the top edge can be another hollow rib (17), similar to the other (9).</p> |
