这个铁件中有没有气泡?如果有气泡,气泡的体积多大?某铁件在铸造时所用木模的质量是1.2kg,铁件铸造成后的质量是15.721kg,已知木模密度为0.6×10³kg/m³,铁的密度为7.9×10³kg/m³ ,求:
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![这个铁件中有没有气泡?如果有气泡,气泡的体积多大?某铁件在铸造时所用木模的质量是1.2kg,铁件铸造成后的质量是15.721kg,已知木模密度为0.6×10³kg/m³,铁的密度为7.9×10³kg/m³ ,求:](/uploads/image/z/10900792-64-2.jpg?t=%E8%BF%99%E4%B8%AA%E9%93%81%E4%BB%B6%E4%B8%AD%E6%9C%89%E6%B2%A1%E6%9C%89%E6%B0%94%E6%B3%A1%3F%E5%A6%82%E6%9E%9C%E6%9C%89%E6%B0%94%E6%B3%A1%2C%E6%B0%94%E6%B3%A1%E7%9A%84%E4%BD%93%E7%A7%AF%E5%A4%9A%E5%A4%A7%3F%E6%9F%90%E9%93%81%E4%BB%B6%E5%9C%A8%E9%93%B8%E9%80%A0%E6%97%B6%E6%89%80%E7%94%A8%E6%9C%A8%E6%A8%A1%E7%9A%84%E8%B4%A8%E9%87%8F%E6%98%AF1.2kg%2C%E9%93%81%E4%BB%B6%E9%93%B8%E9%80%A0%E6%88%90%E5%90%8E%E7%9A%84%E8%B4%A8%E9%87%8F%E6%98%AF15.721kg%2C%E5%B7%B2%E7%9F%A5%E6%9C%A8%E6%A8%A1%E5%AF%86%E5%BA%A6%E4%B8%BA0.6%C3%9710%26%23179%3Bkg%2Fm%26%23179%3B%2C%E9%93%81%E7%9A%84%E5%AF%86%E5%BA%A6%E4%B8%BA7.9%C3%9710%26%23179%3Bkg%2Fm%26%23179%3B+%2C%E6%B1%82%EF%BC%9A)
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