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| 地震事件; 地震活动过程 | |||
| 地震波; 地震波同相轴 | |||
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seismic event : 12 phrases in 5 subjects |
| Electronics | 1 |
| Engineering geology | 3 |
| Oil / petroleum | 4 |
| Technology | 3 |
| United Nations | 1 |
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