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| 等温; 〔分级，马氏体〕淬火; 淬火时效 | |||
| 等温淬火; 分级淬火 | |||
| 马氏体淬火 | |||
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marquench : 6 phrases in 2 subjects |
| Metallurgy | 3 |
| Technology | 3 |
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