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放 泄阀 : 62 phrases in 16 subjects |
Architecture | 2 |
Aviation | 5 |
Compressors | 6 |
Construction | 1 |
Drilling | 2 |
Electronics | 1 |
Engineering geology | 1 |
General | 1 |
Hydroelectric power stations | 3 |
Metallurgy | 2 |
Oil / petroleum | 7 |
Plastics | 1 |
Rail transport | 2 |
Refrigeration | 1 |
Space | 2 |
Technology | 25 |