Array ( [0] => Array ( [title] => L2A [link] => https://www.youtube.com/embed/DlVtZROR9Og ) [1] => Array ( [title] => L2B [link] => https://www.youtube.com/embed/cZV4H7Tf1BI ) [2] => Array ( [title] => L2C [link] => https://www.youtube.com/embed/tmoCpLcGNdE ) [3] => Array ( [title] => L2D [link] => https://www.youtube.com/embed/UFDXQTeMpCA ) [4] => Array ( [title] => L2E [link] => https://www.youtube.com/embed/zkok9T1bq-0 ) ) 國立清華大學開放式課程OpenCourseWare(NTHU, OCW) - 第2講 Semiconductoor physics (chap2)