4798| 3
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40CR的材料,經過冷鍛能否達到HRC25-30的硬度?---[請教] |
Re: 請教:40CR的材料,經過冷鍛能不能達到HRC25-30
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Re: 40CR的材料,經過冷鍛能否達到HRC25-30的硬度?---[請教]
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Re: 40CR的材料,經過冷鍛能否達到HRC25-30的硬度?---[請教]
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