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| month, day and hour of manufacture | |||
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制造 时 间 : 13 phrases in 7 subjects |
| Aviation | 6 |
| Economy | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| International trade | 1 |
| Planning | 1 |
| Project management | 2 |
| Technology | 1 |
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