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| коэффициент светимости; световая эффективность | |||
| световая отдача; светоотдача | |||
| отдача источника света; световой выход; световыход | |||
| Lichtausbeute: 4 phrases in 3 subjects |
| Optics branch of physics | 1 |
| Radio | 2 |
| Technology | 1 |
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