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水土保持; 水土保持方案报告 | |||
水生保持 |
soil and water conservation : 93 phrases in 11 subjects |
Agriculture | 3 |
Animal husbandry | 1 |
Business | 1 |
Desert science | 10 |
Earth sciences | 13 |
Ecology | 23 |
General | 1 |
Hydroelectric power stations | 23 |
Management | 2 |
Technology | 15 |
Water resources | 1 |