NA | |
opt. | numerical aperture |
Na | |
gen. | Yeah? |
NA : 79 phrases in 12 subjects |
Agriculture | 2 |
Chemistry | 27 |
Construction | 2 |
Electronics | 2 |
Environment | 2 |
General | 26 |
Health care | 1 |
Industry | 1 |
Informal | 10 |
Ironical | 1 |
Metallurgy | 2 |
Optics branch of physics | 3 |