渗碳 : 580 phrases in 25 subjects |
Agriculture | 2 |
Architecture | 7 |
Automobiles | 56 |
Aviation | 3 |
Chemistry | 8 |
Compressors | 3 |
Construction | 3 |
Drilling | 2 |
Earth sciences | 1 |
Electronics | 6 |
Engineering geology | 1 |
General | 27 |
Hydroelectric power stations | 1 |
Mechanics | 2 |
Metallurgy | 293 |
Metalworking | 4 |
Nautical | 2 |
Oil / petroleum | 8 |
Rail transport | 1 |
Shipbuilding | 13 |
Space | 10 |
Steel production | 13 |
Technology | 94 |
Transport | 1 |
Wind Energy | 19 |