| |||
| 回浆集管 | |||
| 回水集水管 | |||
|
return header : 10 phrases in 5 subjects |
| Chemistry | 3 |
| Electronics | 3 |
| Hydroelectric power stations | 1 |
| Oil / petroleum | 2 |
| Refrigeration | 1 |
| |||
| 回浆集管 | |||
| 回水集水管 | |||
|
return header : 10 phrases in 5 subjects |
| Chemistry | 3 |
| Electronics | 3 |
| Hydroelectric power stations | 1 |
| Oil / petroleum | 2 |
| Refrigeration | 1 |