Array ( [0] => Array ( [title] => L25A [link] => https://www.youtube.com/embed/rD-v7aBfK9w ) [1] => Array ( [title] => L25B [link] => https://www.youtube.com/embed/YUzaUjBdN18 ) ) 國立清華大學開放式課程OpenCourseWare(NTHU, OCW) - 第25講 CH11 Properties of Solutions