bhqzj
第四节 常用合金铸件生产及铸造方法的选择
2018年6月22日 ... 除Fe外，还含及其它铸铁中的碳以石墨形态析出。若析出的石墨呈条片状时的铸铁叫 灰口铸铁或灰铸铁、呈蠕虫状时的铸铁叫蠕墨铸铁、呈团絮状时 ...
bhqzj
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