 |
| |||
| 可分系统 | |||
| 单独系统 | |||
| 雨水污水分流系统 | |||
| 分流制 | |||
| 分流排水系统; 雨污水分流制; 雨 水污水分流系统; 离散系统; 分流系统 | |||
| 分流系统雨水和污水 | |||
| separate system: 52 phrases in 13 subjects |
| Agriculture | 1 |
| Air defense | 1 |
| Automobiles | 1 |
| Aviation | 4 |
| Construction | 2 |
| Ecology | 4 |
| Electronics | 2 |
| Environment | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 4 |
| Refrigeration | 3 |
| Technology | 25 |
| Water resources | 3 |