boundary : 184 phrases in 16 subjects |
Airports and air traffic control | 2 |
Aviation | 12 |
Chemistry | 44 |
Chromatography | 1 |
Computers | 1 |
Construction | 7 |
Hydrology | 2 |
Law | 55 |
Microsoft | 3 |
Oil / petroleum | 36 |
Optics branch of physics | 6 |
Photography | 1 |
Road works | 1 |
Soil mechanics | 2 |
Surveying | 2 |
Technology | 9 |