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时间均值 : 20 phrases in 12 subjects |
| Architecture | 1 |
| Aviation | 1 |
| Bridge construction | 2 |
| Business | 4 |
| Chemistry | 1 |
| Economy | 1 |
| Electronics | 2 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Metallurgy | 2 |
| Technology | 3 |
| Ultrasound | 1 |
| Wind Energy | 1 |
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