State the DFX of the SMT , DFM Conception and the key technologic points.本文阐述了表面贴装领域中的DFX思想 、 DFM概念和研究内容、DFM软件 系统架构及其实现的关键技术点.Just as in other industry, DFM of SMT is also very important.就如在其它行业中一样, DFM在表面贴装领域中也是同样适用并且非常...

abbr.Distinguished Flying Medal （英军）优异飞行勋章...

DFM的音标：...