Array ( [0] => Array ( [title] => L23A [link] => https://www.youtube.com/embed/XKU75KhQ2p4 ) [1] => Array ( [title] => L23B [link] => https://www.youtube.com/embed/AW6fjsegyIE ) ) 國立清華大學開放式課程OpenCourseWare(NTHU, OCW) - 第23講 CH10 Liquids and Solids