Array ( [0] => Array ( [title] => L15A [link] => https://www.youtube.com/embed/JriBrSSs_sE ) [1] => Array ( [title] => L15B [link] => https://www.youtube.com/embed/5b8xfxhm2Mg ) [2] => Array ( [title] => L15C [link] => https://www.youtube.com/embed/zhxrH-ci5BY ) [3] => Array ( [title] => L15D [link] => https://www.youtube.com/embed/Rt11EJxVVLY ) ) 國立清華大學開放式課程OpenCourseWare(NTHU, OCW) - 第15R講 二階系統的阻尼比