| 摘要 |
The invention relates to a system of tanks (1,23,4,5) from which the tanks (1,2) are completely filled with water via the mouth 6 while the water is being conducted through the tube 15 to the tank 5. Suction is caused and water is driven from the tank 5 to the tank 2 and therefrom through the tube to the tank 3 and through the tube 20 to the tube 14 and, thereby, to the tank 2, upon opening of the mouths (11,12,7,9) of the tubes (21,14,17,19). |
