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| 模式振荡 | |||
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mode oscillation : 30 phrases in 12 subjects |
| Air defense | 1 |
| Aviation | 2 |
| Bridge construction | 2 |
| Electric machinery | 1 |
| Electronics | 5 |
| Engineering geology | 1 |
| Metallurgy | 7 |
| Oil / petroleum | 1 |
| Rail transport | 1 |
| Space | 2 |
| Technology | 5 |
| Telecommunications | 2 |
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