Array ( [0] => Array ( [title] => L25A [link] => https://www.youtube.com/embed/XBqz6Mgps5Q\ ) ) 國立清華大學開放式課程OpenCourseWare(NTHU, OCW) - 第25講|Lecture 4 Electric Field in |4_4A Linear Dielectrics 4_4_1 Susceptibility and Permittivity