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| 冶吹炼时间; 冶炼时间; 一炉冶炼时间 | |||
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heat time : 16 phrases in 8 subjects |
| Hydroelectric power stations | 2 |
| Metallurgy | 4 |
| Plastics | 2 |
| Refrigeration | 1 |
| Space | 2 |
| Sports | 1 |
| Technology | 3 |
| Textile industry | 1 |
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