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| |||
| 排水管 | |||
| |||
| 退水管; 尾水管; 发动机排气管 | |||
| 排污水管 | |||
| 污水管 | |||
| 排水管; 废气管 | |||
| 废水管 | |||
| 排泄管废汽管，污水管 | |||
| 排污管 | |||
| 排泄管; 浴洗废水管; 废水管 (道); 排气管; 泄水管 | |||
| |||
| 放出管; 排泄管 | |||
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waste-pipe : 42 phrases in 4 subjects |
| Bridge construction | 1 |
| Ecology | 3 |
| Metallurgy | 1 |
| Technology | 37 |
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