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排放管 : 67 phrases in 17 subjects |
Agriculture | 1 |
Automobiles | 1 |
Aviation | 6 |
Chemistry | 1 |
Drilling | 3 |
Ecology | 3 |
Electronics | 10 |
Engineering geology | 2 |
Environment | 1 |
General | 2 |
Hydraulics | 1 |
Mechanics | 1 |
Metallurgy | 1 |
Nautical | 1 |
Oil / petroleum | 6 |
Polymers | 1 |
Technology | 26 |