Array ( [0] => Array ( [title] => L24A [link] => https://www.youtube.com/embed/YFkhrx9rZAc ) [1] => Array ( [title] => L24B [link] => https://www.youtube.com/embed/y7oj4oDhROw ) [2] => Array ( [title] => L24C [link] => https://www.youtube.com/embed/R9PeYnnF6-s ) ) 國立清華大學開放式課程OpenCourseWare(NTHU, OCW) - 第24講 The Gauss Map in Local Coordinates (cont.)