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| |||
| Winkelapertur f; Winkelöffnung f | |||
| Aperturwinkel m; a | |||
| Winkelblende f | |||
| Öffnungswinkel m | |||
| Öffnungswinkel m (microscope: the angle of the largest cone of light entering the objective from an object point on the axis) | |||
| angular aperture: 5 phrases in 2 subjects |
| Nuclear physics | 1 |
| Optics branch of physics | 4 |