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| 土磐; 耕底层; 心土层 | |||
| 硬土磐 | |||
| 土壤蒸发器; 土壤蒸发皿 | |||
| soil pan: 9 phrases in 5 subjects |
| Animal husbandry | 1 |
| Desert science | 1 |
| Engineering geology | 2 |
| Hydroelectric power stations | 2 |
| Technology | 3 |
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