由于基站电磁辐射对飞行器的飞行安全构成潜在威胁,本文提出了一种混合计算方法来研究城市微蜂窝小区上空电场分布情况.该方法通过......

对静压条件下超临界CO2制备微孔片材的工艺进行了探讨.重点考察间歇发泡工艺参数对微孔片材质量的影响.试验结果表明:采用间歇式发......

Present now the application of microcellular polymeric materials in biomedical field is growing rapidly, as that of guid......