这是传统材料的研究，我们从中可以学习。
It is a exploration of the traditional materials so we can learn from them.
对传统金属电子封装材料的研究开发现状进行了简单评述。
A brief review of the research and development of the traditional packaging materials is given.
对传统金属电子封装材料的研究开发现状进行了简单评述。
A brief review of the research and development of the traditional packaging materials is given.
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