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摆 管 : 61 phrases in 14 subjects |
Agriculture | 1 |
Automobiles | 2 |
Aviation | 2 |
Construction | 1 |
Drilling | 1 |
Electronics | 1 |
General | 4 |
Metallurgy | 2 |
Oil / petroleum | 4 |
Radio | 2 |
Space | 22 |
Technology | 16 |
Textile industry | 1 |
Wind Energy | 2 |