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| Graukeil m (фотометрический) | |||
| Graukeil m; grauer Keil | |||
| Graukeil m (телевизионной испытательной таблицы) | |||
| Graustufenkeil m; Neutralkeil m | |||
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| grauer Keil (телевизионной испытательной таблицы) | |||
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серый клин : 27 phrases in 9 subjects |
| Astronomy | 1 |
| Cinema equipment | 8 |
| Nuclear physics | 1 |
| Optics branch of physics | 4 |
| Photography | 1 |
| Polygraphy | 1 |
| Quantum electronics | 6 |
| Radio | 3 |
| Technology | 2 |
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