Array ( [0] => Array ( [title] => L12A [link] => https://www.youtube.com/embed/XqTq1VVFBvA ) [1] => Array ( [title] => L12B [link] => https://www.youtube.com/embed/so6HXKK-W88 ) [2] => Array ( [title] => L12C [link] => https://www.youtube.com/embed/tBqYKUG-YTk ) ) 國立清華大學開放式課程OpenCourseWare(NTHU, OCW) - 第12講 機械設計四連桿組裝(一)