为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

Metal-dielectric subwavelength gratings under s-polarized and p-polarized visible radiation are studied for discovering ......

<正>We have measured the cross section forπ~+π~- production in two-photon collisions using a data sample with an integ......