| 摘要 |
The invention relates to a system of cisterns (1,2,3,4,5,6) from which the cisterns (1,3,4,5) are filled with water through the mouths (22,17). In the sequel, the cistern 6 is filled with water and so is, at a restricted level, the cistern 2 via the respective intercommunicating water intakes and ducts. Strong water suction is created by the cistern 1 so that the water ascents from the cistern 6 to the cistern 2 via the duct 16. Then, suction is incited by the cisterns (3,4,5). |
