搜索 - 科创

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科学传播的媒体转向侯强,刘兵载《科学对社会的影响》，2003年第4期。科学传播的媒体转向侯强刘兵摘要：传统的科学传播研究忽略了媒体的作用。媒体并非只是科学传播的一个中介，媒介技术的改进、媒体自身独立...

第3l卷第4期固体火箭技术Journal of Solid Rocket Technology V01．31 No．4 2008固体燃料冲压发动机火炬式点火器设计①刘巍，杨涛，胡建新，于宁，李理(国防...

前言　　我们经常听说某某芯片采用什么什么的封装方式，在我们的电脑中，存在着各种各样不同处理芯片，那么，它们又是是采用何种封装形式呢？并且这些封装形式又有什么样的技术特点以及优越性呢？那么就请看看下面的...

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