电动 计算 机 : 55 phrases in 16 subjects |
Agriculture | 1 |
Air defense | 2 |
Aviation | 7 |
Business | 3 |
Commerce | 1 |
Earth sciences | 3 |
Economy | 1 |
Electronics | 11 |
General | 10 |
Geology | 1 |
Information technology | 1 |
Shipbuilding | 2 |
Space | 3 |
Sports | 1 |
Technology | 7 |
Telecommunications | 1 |