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| 石砌排水沟 | |||
| 砌石排水沟 | |||
| 盲沟; 填石盲沟; 石砌盲沟; 石砌暗沟 | |||
| stone drain: 17 phrases in 6 subjects |
| Agriculture | 1 |
| Bridge construction | 1 |
| Construction | 1 |
| Engineering geology | 3 |
| Hydroelectric power stations | 2 |
| Technology | 9 |
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