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管式排水暗管排水 | |||
管道排水 | |||
暗管排水; 管式暗沟 | |||
排水管系 (统); 排水管 |
pipe drainage : 68 phrases in 10 subjects |
Agriculture | 1 |
Architecture | 1 |
China | 1 |
Compressors | 1 |
Engineering geology | 1 |
Hydroelectric power stations | 11 |
Metallurgy | 1 |
Nautical | 1 |
Rail transport | 3 |
Technology | 47 |