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| infiltration channel | |||
| infiltration ditch | |||
| seepage gutter | |||
| weep drain | |||
| infiltration gutter | |||
| 渗水沟: 8 phrases in 5 subjects |
| Engineering geology | 1 |
| Hydroelectric power stations | 2 |
| Metallurgy | 1 |
| Rail transport | 1 |
| Technology | 3 |
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