| |||
| 井干式构造; 圆木结构; 原木结构 | |||
|
log construction : 7 phrases in 4 subjects |
| Architecture | 1 |
| Hydroelectric power stations | 1 |
| Hydrology | 1 |
| Technology | 4 |
| |||
| 井干式构造; 圆木结构; 原木结构 | |||
|
log construction : 7 phrases in 4 subjects |
| Architecture | 1 |
| Hydroelectric power stations | 1 |
| Hydrology | 1 |
| Technology | 4 |