Array ( [0] => Array ( [title] => L4A [link] => https://www.youtube.com/embed/uhuUnvWENms ) [1] => Array ( [title] => L4B [link] => https://www.youtube.com/embed/XEjxV6EgNnA ) [2] => Array ( [title] => L4C [link] => https://www.youtube.com/embed/ieZHGYN6UAM ) [3] => Array ( [title] => L4D [link] => https://www.youtube.com/embed/ZK1coeQI7h0 ) [4] => Array ( [title] => L4E [link] => https://www.youtube.com/embed/uO8X3PealKg ) [5] => Array ( [title] => L4F [link] => https://www.youtube.com/embed/g5mIVuCvnx0 ) ) 國立清華大學開放式課程OpenCourseWare(NTHU, OCW) - 第4講Physics of bipolar transistor (chap4)