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怎样的热处理工艺能提高20SiMn2MoV的-20℃的冲击功 |
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低温冲击
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回答:怎样的热处理工艺能提高20SiMn2MoV的-20℃的冲击功
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回答:怎样的热处理工艺能提高20SiMn2MoV的-20℃的冲击功
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