博文
全部博文|画意和诗情|
魔方和隐喻：也有老虎|
探路和走路|
闲情和逸致|
背景和内涵|
以前和现在|
魔方和数学建模－08年|
思想和方法|
原子和原子|
华南虎照和大毛聊斋|
视频专栏：《魔方和数学建模》|
时评：无刺儿非玫瑰|
屎壳郎：环保而哲学|
科学魂：独望天涯路|
晶体学和空间群|
EET电子理论|
电子密度理论|
逻辑学和奇谈怪论|
诺贝尔奖的奇思妙想|
导师和研究生|
家乡大毛忽洞|
原子组装理论|
风流儒学和黑箱中医|
从娃娃抓起|
时髦的学者番号|
我的物理学|
韩春雨和技术秘籍|
看图说话|
留学游学温哥华|
Rubik's Cube|
Megaminx-五魔方|
GIF动画故事|
玩魔方学数学|
Play Cube and Learn Math|
Arbutus greenway|
我的视频|
照片说野花野草|
照片说鸟人鸟事|
2020-野花野草|
2020-野鸟|
2021-野花野草|
2021-视频|
2022-魔方历程|
北纬49度|
兔年-2023|
2024-魔方和自然|
- Megaminx = Ih Point Group: (27): BG[2]
- BG indicates a C2 operation, with the connecting line of the center of Megaminx to BG as the axis, rotating 180° counterclockwise. This is the definition in the textbook. In this video, BG can rotate the triangle on the face W to the face S, while the other cubies are unchanged. At the sa ...
- Megaminx = Ih Point Group: (26): AE[2]
- AE indicates a C2 operation, with the connecting line of the center of Megaminx to AE as the axis, rotating 180° counterclockwise. This is the definition in the textbook. In this video, AE can rotate the triangle on the face W to the face N, while the other cubies are unchanged. At the sa ...
- 春假（spring break）
- 爷爷跟着孙女走，孙女 P reschool 放假（ spring break ），出来和爷爷观鸟，一棵树上有两只鸟：歌麻雀和蜂鸟 蜂鸟飞了一下，又回到树上
- Megaminx = Ih Point Group: (25): ED[2]
- ED indicates a C2 operation, with the connecting line of the center of Megaminx to ED as the axis, rotating 180° counterclockwise. This is the definition in the textbook. In this video, ED can rotate the triangle on the face W to the face M, while the other cubies are unchanged. At the sa ...
- Megaminx = Ih Point Group: (24): CD[2]
- CD indicates a C2 operation, with the connecting line of the center of Megaminx to CD as the axis, rotating 180° counterclockwise. This is the definition in the textbook. In this video, CD can rotate the triangle on the face W to the face H, while the other cubies are unchanged. At the sa ...
- Megaminx = Ih Point Group: (23): BC[2]
- BC indicates a C2 operation, with the connecting line of the center of Megaminx to BC as the axis, rotating 180° counterclockwise. This is the definition in the textbook. In this video, BC can rotate the triangle on the face W to the face G, while the other cubies are unchanged. At the sa ...
- Megaminx = Ih Point Group: (22): AB[2]
- AB indicates a C2 operation, with the connecting line of the center of Megaminx to AB as the axis, rotating 180° counterclockwise. This is the definition in the textbook. In this video, AB can rotate the triangle on the face W to the face F, while the other cubies are unchanged. At the sa ...
- 我找到了 她的 男的
- 前面的头发发红，这鸭子 属于 common merganser ，我叫她红头鸭，是女的 ； 后面的是绿头鸭，是男的，属于 mallard. 修辞总是可以用的，讲故事就要用修辞。 红头鸭在睡觉，前面的鸭子是对应绿头鸭的女的，属于 mallard 前面是红头鸭，是女的；后面的是对应的男的，她和 ...
- Megaminx = Ih Point Group: (21): WE[2]
- WE indicates a C2 operation, with the connecting line of the center of Megaminx to WE as the axis, rotating 180° counterclockwise. This is the definition in the textbook. In this video, WE can rotate the triangle on the face W to the face E, while the other cubies are unchanged. At the sa ...
