| 摘要 |
The vat has a tank whose upper surface is formed with an opening, and a flange (25) arranged around the opening. Ribs (37, 45) are arranged under the flange and another flange to connect the flanges to an external face (27) of the tank, where the vat is formed to be embedded in another vat by inserting the latter vat in the opening of the tank. The flanges are superimposed one above another and are separated by a distance ranging between 100 and 200 mm. Each rib is formed, so that water streaming along the ribs does not fill the tank of bottom vat when the vats are stacked. |
