Array ( [0] => Array ( [title] => L7A [link] => https://www.youtube.com/embed/hvZ_4VhAtmw ) [1] => Array ( [title] => L7B [link] => https://www.youtube.com/embed/S1iSLIUaaRc ) ) 國立清華大學開放式課程OpenCourseWare(NTHU, OCW) - 第7講 Steady-state, Oin-dimensional Conduction