 |
| 硬焊: 163 phrases in 20 subjects |
| Agriculture | 2 |
| Architecture | 3 |
| Automobiles | 4 |
| Aviation | 1 |
| Chemistry | 2 |
| Drilling | 8 |
| Electric machinery | 7 |
| Electronics | 4 |
| General | 8 |
| Mechanics | 3 |
| Metallurgy | 50 |
| Oil / petroleum | 9 |
| Rail transport | 3 |
| Refrigeration | 1 |
| Shipbuilding | 3 |
| Space | 1 |
| Steel production | 3 |
| Technology | 47 |
| Welding | 1 |
| Wind Energy | 3 |