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稀有金属 |
rare metal : 37 phrases in 12 subjects |
Automobiles | 1 |
Chemistry | 2 |
Desert science | 1 |
Earth sciences | 1 |
Ecology | 1 |
Electronics | 2 |
International trade | 3 |
Metallurgy | 12 |
Oil / petroleum | 2 |
Refrigeration | 2 |
Technology | 9 |
Wind Energy | 1 |