2855| 9
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外壁有幾個(gè)孔的封閉型腔體,,里面的沙可以從孔中掏出來(lái)嗎 |
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點(diǎn)評(píng)
如果強(qiáng)度沒(méi)有問(wèn)題,,個(gè)人覺(jué)得中間的大孔可以從左貫通到右邊,鑄造時(shí)可以定位型芯,,也可以掏砂,。
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