| 摘要 |
<p>Apparatus with a water turbine or water pump, especially a tube-type turbine (2) with two or more wheels (25, 26) rotating independently of each other and placed successively in the axial direction, especially with mutually opposite blade slopes. The wheels (25, 26) are each coupled to a generator or motor, which is arranged to be controlled mutually independently in regard to rotational speed and electrical power.</p> |
