Discuss and technical exchanging was performed pertaining casting technology of automobile castings by foundry of Yaojin auto Group company and related Spain company.
跃进汽车集团公司铸造厂与西班牙有关公司的铸造技术人员，就汽车铸件的铸造工艺进行了讨论与交流。
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The first chapter of the paper briefly defines the meaning of "poverty"and"urban poverty group"and introduces researching method, including casting samples, which are the basis of the whole research.