light output ratio | |
el. | valaisimen käyttöhyötysuhde |
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optical effect | |||
opt. |
optical: 134 phrases in 15 subjects |
Antennas and waveguides | 19 |
Chemistry | 1 |
Communications | 1 |
Electronics | 12 |
General | 3 |
Immigration and citizenship | 1 |
Industry | 6 |
Information technology | 16 |
Lighting other than cinema | 8 |
Microsoft | 2 |
Natural sciences | 1 |
Patents | 57 |
Physical sciences | 2 |
Technology | 2 |
Transport | 3 |