The fundamental problems of ZA27 alloy squeeze casting with high ratio of height to thickness were studied in this paper.
本文主要研究了大高径比ZA27合金铸件挤压铸造过程的若干基本问题。
This paper briefly introduces some characteristics of all kinds of die casting alumni urn alloys and their application.
本文简要介绍了各种压铸铝合金的一些特点及应用情况。
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.
本文的第一章简要地对“贫困”和“城镇贫困人口”做出了界定,并介绍了研究方法,包括样本的抽取,作为整个研究的基础。
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