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volume group |
卷 组 : 24 phrases in 11 subjects |
Chemistry | 2 |
Earth sciences | 1 |
Electronics | 3 |
Information technology | 3 |
Metallurgy | 7 |
Name of organization | 1 |
Polygraphy | 2 |
Steel production | 1 |
Technology | 2 |
Telecommunications | 1 |
Textile industry | 1 |