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underwater test |
水下 试验 : 35 phrases in 11 subjects |
Automobiles | 1 |
Aviation | 5 |
Earth sciences | 1 |
Engineering geology | 2 |
Explosives and Explosive Ordnance Disposal | 3 |
General | 1 |
Navigation | 2 |
Shipbuilding | 1 |
Space | 7 |
Technology | 10 |
United States | 2 |