| |||
optical recorder |
光 记录 仪 : 48 phrases in 14 subjects |
Agriculture | 1 |
Aviation | 6 |
Earth sciences | 3 |
Electronics | 7 |
General | 1 |
Geology | 3 |
Geophysics | 1 |
Information technology | 1 |
Metallurgy | 1 |
Missiles | 1 |
Shipbuilding | 2 |
Space | 5 |
Technology | 14 |
Telecommunications | 2 |