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径向 轴 承 : 49 phrases in 13 subjects |
Automobiles | 11 |
Aviation | 1 |
Compressors | 3 |
Drilling | 2 |
Electric machinery | 3 |
Electronics | 2 |
Hydroelectric power stations | 3 |
Metallurgy | 2 |
Oil / petroleum | 3 |
Shipbuilding | 1 |
Space | 2 |
Technology | 13 |
Wind Energy | 3 |