| 摘要 |
A window includes a flap 2 with double-glazing unit 3 inserted in a frame 1, a tank 4 disposed in frame component filled with toning substance. The axles 6 by which flap frame is connected to window frame are fastened in flap frame vertical component middle point. The flap is rotable in vertical plane on 180оC relative to stationary frame 1 for moving under toning substance own gravity influence between the tank and double-glazing unit. Toning substance is liquid or solid, loose mass consisting of uniform spherical granules. |
