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| 反坡; 反向坡; 反向坡度 | |||
| 反〔逆〕坡 | |||
| 逆向坡 | |||
| 逆坡; 逆比降; 倒坡; 反倾斜; 反比降 | |||
| adverse grade: 3 phrases in 1 subject |
| Engineering geology | 3 |
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