 |
| |||
| 平面焊接位置 | |||
| flat welding position: 16 phrases in 6 subjects |
| Bridge construction | 1 |
| Construction | 1 |
| Metallurgy | 1 |
| Rail transport | 1 |
| Technology | 11 |
| Wind Energy | 1 |
|
| |||
| 平面焊接位置 | |||
| flat welding position: 16 phrases in 6 subjects |
| Bridge construction | 1 |
| Construction | 1 |
| Metallurgy | 1 |
| Rail transport | 1 |
| Technology | 11 |
| Wind Energy | 1 |