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| 震源深度 | |||
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focus depth : 25 phrases in 9 subjects |
| Agriculture | 1 |
| Bridge construction | 2 |
| Electronics | 9 |
| Engineering geology | 1 |
| Hydroelectric power stations | 1 |
| Metallurgy | 2 |
| Physiology | 2 |
| Remote sensing | 3 |
| Technology | 4 |
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