All
49,181 | 14:54duration 14 minutes 54 seconds
長度和距離 (二)
ronson@hkecl.net 13/2/2020
51,816 | 14:46duration 14 minutes 46 seconds
長度和距離(一)
ronson@hkecl.net 14/2/2020
19,488 | 19:48duration 19 minutes 48 seconds
速率
ronson@hkecl.net 25/2/2020
4,250 | 24:40duration 24 minutes 40 seconds
淺談力和運動的分析 (中文字幕可供選擇)
16,494 | 14:42duration 14 minutes 42 seconds
體積(二)
ronson@hkecl.net 15/2/2020
14,890 | 15:09duration 15 minutes 9 seconds
體積(一)
15,672 | 14:47duration 14 minutes 47 seconds
面積(一)
ronson@hkecl.net 16/2/2020
4,010 | 15:03duration 15 minutes 3 seconds
物件有多大
ronson@hkecl.net 21/2/2020
12,850 | 15:05duration 15 minutes 5 seconds
面積 (一)
ronson@hkecl.net 1/3/2020
1,009 | 24:42duration 24 minutes 42 seconds
Getting into the Analysis of Force and Motion…
Getting into the Analysis of Force and Motion (English subtitles available)
374 | 19:29duration 19 minutes 29 seconds
Sound and the Ear (English subtitles available)
ronson@hkecl.net 27/2/2020
597 | 20:10duration 20 minutes 10 seconds
Global Distribution Pattern of Temperature…
Global Distribution Pattern of Temperature (English subtitles available)
ronson@hkecl.net 18/2/2020
開始和結束時間:
開始時間: