Array ( [0] => Array ( [title] => L12A [link] => https://www.youtube.com/embed/Od0xw2TB1ds ) [1] => Array ( [title] => L12B [link] => https://www.youtube.com/embed/lWF3EGz6yyA ) [2] => Array ( [title] => L12C [link] => https://www.youtube.com/embed/Je1mI5dJbaU ) ) 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)