Array ( [0] => Array ( [title] => L17A [link] => https://www.youtube.com/embed/pbv_-_N8pWg ) [1] => Array ( [title] => L17B [link] => https://www.youtube.com/embed/yYl24qV07Vc ) [2] => Array ( [title] => L17C [link] => https://www.youtube.com/embed/FbasiQE3VY8 ) ) 國立清華大學開放式課程OpenCourseWare(NTHU, OCW) - 第17講 kinematic theory