5267| 3
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消失模一點(diǎn)問(wèn)題, |
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點(diǎn)評(píng)
看了個(gè)視頻明白了,就是鑄造的型材,然后一節(jié)一節(jié)的截?cái)啵缓髮C(jī)上開(kāi)孔銑槽。
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