平衡器: 180 phrases in 20 subjects |
Automobiles | 2 |
Aviation | 1 |
Communications | 1 |
Drilling | 1 |
Education | 1 |
Electrical engineering | 2 |
Electricity | 3 |
Electronics | 42 |
Engines | 1 |
General | 48 |
Mechanic engineering | 2 |
Medical | 1 |
Military | 1 |
Nautical | 1 |
Oil and gas | 1 |
Oil processing plants | 4 |
Physiology | 1 |
Radio | 8 |
Rail transport | 1 |
Technology | 58 |