 |
| |||
| flame front | |||
| 火焰面: 60 phrases in 9 subjects |
| Aviation | 4 |
| Construction | 1 |
| General | 2 |
| Hydroelectric power stations | 1 |
| Metallurgy | 30 |
| Metalworking | 1 |
| Oil / petroleum | 4 |
| Technology | 16 |
| Welding | 1 |
|
| |||
| flame front | |||
| 火焰面: 60 phrases in 9 subjects |
| Aviation | 4 |
| Construction | 1 |
| General | 2 |
| Hydroelectric power stations | 1 |
| Metallurgy | 30 |
| Metalworking | 1 |
| Oil / petroleum | 4 |
| Technology | 16 |
| Welding | 1 |