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| 冷淬; 冷介质淬火 | |||
| 零下淬火; 冰冷处理 | |||
| 冷介质淬火 | |||
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| 冷淬; 冷介质淬火; 水冷〔冷介质〕淬火 | |||
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cold quenching : 4 phrases in 1 subject |
| Metallurgy | 4 |
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