6869| 10
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45鋼淬火溫度為850度左右,回火溫度510度左右。 |
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點(diǎn)評(píng)
這個(gè)好用啊
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點(diǎn)評(píng)
除了螺釘類(lèi)小件大多用油淬是不行的.
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