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| 浮动水平 | |||
| fluctuation level: 36 phrases in 10 subjects |
| Agriculture | 1 |
| Desert science | 1 |
| Ecology | 1 |
| Engineering geology | 1 |
| General | 1 |
| Hydroelectric power stations | 5 |
| Metallurgy | 7 |
| Oil / petroleum | 1 |
| Space | 1 |
| Technology | 17 |
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