4 3对称中心和反演及镜面和反映操作

New channel 中国大学MOOC-慕课: title sample judged 'whole' (This is China's national university MOOC platform channel, consisting almost entirely of structured lecture series and c); 0 of 3 sampled transcripts showed teaching, 0 not; titles picked one by one, checked strictly; oEmbed verified.

A 6-minute video from 中国大学MOOC-慕课: “4 3对称中心和反演及镜面和反映操作”.

Video by 中国大学MOOC-慕课, played through YouTube's embedded player.