 |
| |||
| 分流制污水管 | |||
| 单用下水道; 单用污水管; 分流制下水道; 分流沟道; 分流污水道 | |||
| separate sewer: 8 phrases in 3 subjects |
| Environment | 1 |
| Oil / petroleum | 1 |
| Technology | 6 |
|
| |||
| 分流制污水管 | |||
| 单用下水道; 单用污水管; 分流制下水道; 分流沟道; 分流污水道 | |||
| separate sewer: 8 phrases in 3 subjects |
| Environment | 1 |
| Oil / petroleum | 1 |
| Technology | 6 |