filament : 145 phrases in 19 subjects |
Agriculture | 2 |
Chemistry | 4 |
Earth sciences | 6 |
Electronics | 29 |
Energy industry | 1 |
Fish farming pisciculture | 1 |
General | 6 |
Industry | 61 |
Life sciences | 1 |
Lighting other than cinema | 7 |
Materials science | 1 |
Medical | 6 |
Metallurgy | 1 |
Natural sciences | 2 |
Patents | 2 |
Superconductivity | 2 |
Technology | 4 |
Transport | 6 |
Vacuum tubes | 3 |