3493| 7
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冷軋板硬度H 1/2是什么工藝達(dá)到的,? |
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點(diǎn)評(píng)
那不同檔次是怎么區(qū)別加工的呢
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點(diǎn)評(píng)
相當(dāng)于“調(diào)質(zhì)軋制”
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