| |||
| 定点施肥法; 穴施法 | |||
| 充填方法 | |||
|
placement method : 6 phrases in 4 subjects |
| Hydroelectric power stations | 1 |
| Information technology | 1 |
| Oil / petroleum | 3 |
| Technology | 1 |
| |||
| 定点施肥法; 穴施法 | |||
| 充填方法 | |||
|
placement method : 6 phrases in 4 subjects |
| Hydroelectric power stations | 1 |
| Information technology | 1 |
| Oil / petroleum | 3 |
| Technology | 1 |