The features, process, major properties as well as relatives to applications of the vacuum tungsten copper materials are presented.

本文介绍了真空钨铜材料的特点、制取工艺及主要性能，并讨论了与应用有关的问题。

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This article describes essential process and design of multiplayer ceramic packages, selecting of major original materials, and its some questions in the research, and production.

本文叙述了多层陶瓷外壳的基本工艺和设计，主要原材料的选用以及在科研和生产过程中的一些问题。

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This paper takes processing technology of lime cream materials as the major study object, and explores relationship between production process and performance of basic lime cream and mixed system.

本文将灰膏类材料的加工工艺作为主要研究对象，探讨了灰膏基体材料和混合体系的性能与各自制作工艺之间的关系。

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