| 摘要 |
The device (10) has operating elements, particularly rotary wing (16) or rotary blades. The operating elements have a partially curved, particularly circular arc-shaped or ellipsoid arc-shaped outer circumference. The operating elements are connected with a component of an electric motor, particulddarly rotor (32), or a device for delivering and transmitting a rotational movement, particularly a rotary shaft or gear box. |
