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PCB信号传输导体高密度化要求和发展——PCB制造技术发展趋势和特点(1) 被引量:4
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作者 林金堵 《印制电路信息》 2017年第5期19-24,共6页
文章评论了PCB高密度化的要求与发展。IC集成度提高和组装技术进步要求PCB高密度化发展。PCB高密度化:首先是线宽/间隔精细化、导通孔微小化;然后是导线(体)变革、即短线、少线、无线的孔/盘连接技术;最后是走向具有最短、最少(线、孔、... 文章评论了PCB高密度化的要求与发展。IC集成度提高和组装技术进步要求PCB高密度化发展。PCB高密度化:首先是线宽/间隔精细化、导通孔微小化;然后是导线(体)变革、即短线、少线、无线的孔/盘连接技术;最后是走向具有最短、最少(线、孔、盘)连接的埋置(集成)元器件的PCB技术。 展开更多
关键词 高密度化 线宽/间隔 微导通孔 层间连接结构 埋置元件
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The Continuum Analytical Method of Steel Frame- Reinforced Concrete Shear Wall Mixed Structure
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作者 Jian Liu Xiangyun Huang +2 位作者 Guangen Zhou Jiping Hao Zenglin Xing 《Journal of Civil Engineering and Architecture》 2011年第4期368-374,共7页
The inter-story drift stiffness considered the semirigidity of beam and column joints connection, and P-Delta second order effect of steel frame parts in the mixed structure is presented in the paper. After considerin... The inter-story drift stiffness considered the semirigidity of beam and column joints connection, and P-Delta second order effect of steel frame parts in the mixed structure is presented in the paper. After considering on the influence of semirigidity between steel beams and steel columns, second order effect of beam-column members for steel frame and structural second order effect, the traditional continuum analytial method used in RC shear-frames wall structure is developed to steel frames-reinforced concrete shear wall mixed structure subject to horizontal load in this paper. A continuum approach, which is suitable for analyzing steel frames-reinforced concrete shear wall mixed structure subject to horizontal load, is presented. The method is relatively simple and more practical. It will be referred to structural design for steel frames-reinforced concrete shear wall mixed structure. 展开更多
关键词 Steel frames-reinforced concrete wall mixed structure continuum analytial approach inter-story drift stiffness semirigid connection second order effect.
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