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动力机构 : 31 phrases in 13 subjects |
Agriculture | 2 |
Automobiles | 7 |
Aviation | 4 |
Construction | 1 |
Electronics | 1 |
Finances | 1 |
General | 2 |
Metallurgy | 1 |
Oil / petroleum | 3 |
Rail transport | 1 |
Refrigeration | 1 |
Shipbuilding | 1 |
Technology | 6 |