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| stratum basal | |||
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基 地层 : 57 phrases in 10 subjects |
| Bridge construction | 4 |
| China | 1 |
| Earth sciences | 1 |
| Electronics | 2 |
| Engineering geology | 4 |
| Geophysics | 6 |
| Hydroelectric power stations | 5 |
| Nautical | 1 |
| Oil / petroleum | 4 |
| Technology | 29 |
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