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 |