reserve tree
| method
| reserve tree | |
| agric. | 保残木 |
| method | |
| gen. | 法; 标准; 水平 |
| environ. | 方法 |
| hydroel.st. од. | 方法 |
| mech. | 电火花法 |
| |||
| 保残木 | |||
|
reserve tree : 4 phrases in 2 subjects |
| Agriculture | 2 |
| Forestry | 2 |