Array ( [0] => Array ( [title] => L39A [link] => https://www.youtube.com/embed/75o7GI3dfjU ) [1] => Array ( [title] => L39B [link] => https://www.youtube.com/embed/sLpp7tXlTKQ ) ) 國立清華大學開放式課程OpenCourseWare(NTHU, OCW) - Lecture 39 | Example: Transcritical bifurcation without parameters