研制 试验 | |
auto. | development test |
研制试验 | |
avia. | development test |
busin. | research and development test |
el. | development's test |
space | development test; developmental test |
飞行器 | |
avia. | vehicle |
研制试验: 65 phrases in 12 subjects |
Air defense | 1 |
Automobiles | 1 |
Aviation | 30 |
Business | 2 |
Commerce | 1 |
Earth sciences | 5 |
Economy | 1 |
Electronics | 1 |
General | 1 |
Space | 20 |
Technology | 1 |
United States | 1 |