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| 反复熔炼; 回熔; 反复焙炼〔熔炼〕 | |||
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| 反复熔炼法; 回熔 | |||
| melt back: 5 phrases in 3 subjects |
| Metallurgy | 3 |
| Plastics | 1 |
| Technology | 1 |
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