Array ( [0] => Array ( [title] => L17A [link] => https://www.youtube.com/embed/o8peebwVJCc ) [1] => Array ( [title] => L17B [link] => https://www.youtube.com/embed/ABr9VqVHKTw ) [2] => Array ( [title] => L17C [link] => https://www.youtube.com/embed/U8F5CsX3Ehg ) ) 國立清華大學開放式課程OpenCourseWare(NTHU, OCW) - 第17R講 Parallel Transport and Geodesics