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设计时间 |
design time : 25 phrases in 11 subjects |
Aviation | 2 |
Business | 4 |
China | 1 |
Earth sciences | 3 |
Electronics | 4 |
Explosives and Explosive Ordnance Disposal | 1 |
Hydroelectric power stations | 3 |
Information technology | 2 |
Metallurgy | 1 |
Project management | 2 |
Technology | 2 |