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| 降落〔下降，浸润，凹〕曲线 | |||
| 降落曲线; 下降曲线; 浸润曲线; 洩降曲線 | |||
| 降低曲线; 凹曲线 | |||
| depression curve: 8 phrases in 2 subjects |
| Engineering geology | 2 |
| Technology | 6 |
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