 |
| |||
| lumen output | |||
| light efficiency (источника); light output; luminous efficiency (источника) | |||
| luminous efficacy (MichaelBurov); luminaire efficiency (MichaelBurov); luminary efficiency (MichaelBurov); light output ratio (MichaelBurov) | |||
| light efficiency; luminous efficiency | |||
| light output (источника) | |||
| lumen efficiency; luminous efficiency (светильника) | |||
| светоотдача: 10 短语, 8 学科 |
| 媒体 | 2 |
| 库页岛 | 1 |
| 建造 | 1 |
| 技术 | 2 |
| 照明（电影院除外） | 1 |
| 电气工程 | 1 |
| 阴极射线管 | 1 |
| 马卡罗夫 | 1 |