 |
| |||
| acetylene pipe | |||
| 乙炔管: 14 phrases in 6 subjects |
| Architecture | 2 |
| Hydroelectric power stations | 1 |
| Metallurgy | 2 |
| Oil / petroleum | 1 |
| Shipbuilding | 2 |
| Technology | 6 |
|
| |||
| acetylene pipe | |||
| 乙炔管: 14 phrases in 6 subjects |
| Architecture | 2 |
| Hydroelectric power stations | 1 |
| Metallurgy | 2 |
| Oil / petroleum | 1 |
| Shipbuilding | 2 |
| Technology | 6 |