各位请帮助

fpeixin

F'(r U R' U') (r' F R ),这是一条gan手法公式,请问里面的<FONT size=6><STRONG>"&nbsp;&nbsp; r&nbsp; "</STRONG></FONT>与<FONT size=6><STRONG>"&nbsp; r'&nbsp; "<FONT size=2>分别是什么意思?</FONT></STRONG></FONT>

kexin_xiao

<SPAN lang=EN-US style="FONT-SIZE: 14pt; FONT-FAMILY: 仿宋_GB2312; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><?xml:namespace prefix = v ns = "urn:schemas-microsoft-com:vml" /><v:shapetype id=_x0000_t75 stroked="f" filled="f" path="m@4@5l@4@11@9@11@9@5xe" o:preferrelative="t" o:spt="75" coordsize="21600,21600"><STRONG><FONT color=blue size=6>&nbsp;<v:stroke joinstyle="miter"></v:stroke><v:formulas><v:f eqn="if lineDrawn pixelLineWidth 0"></v:f><v:f eqn="sum @0 1 0"></v:f><v:f eqn="sum 0 0 @1"></v:f><v:f eqn="prod @2 1 2"></v:f><v:f eqn="prod @3 21600 pixelWidth"></v:f><v:f eqn="prod @3 21600 pixelHeight"></v:f><v:f eqn="sum @0 0 1"></v:f><v:f eqn="prod @6 1 2"></v:f><v:f eqn="prod @7 21600 pixelWidth"></v:f><v:f eqn="sum @8 21600 0"></v:f><v:f eqn="prod @7 21600 pixelHeight"></v:f><v:f eqn="sum @10 21600 0"></v:f></v:formulas><v:path o:connecttype="rect" gradientshapeok="t" o:extrusionok="f"></v:path>前两层!</FONT></STRONG></v:shapetype></SPAN>

fpeixin

还是没明白,前二层?
(r U R' U') 那这一小块具体要怎么转呢?

DODO鱼

您老搞错了,r和r'是表示右手边的2层,转法同R和R'

gozichen

r 是右边两层顺时针转90;
(r U R' U')跟RUR'U'一样的手法，只是第一个r是右两层一起转。

小手

DODO正解，小写字母表示某侧的两层，也就是说做完这个转动，中心快也会随之转动

DODO鱼

<P>直观点,看图:</P>
<P><IMG onmouseover="attachimginfo(this, 'attach_10977', 1);attachimg(this, 'mouseover')" onmouseout="attachimginfo(this, 'attach_10977', 0, event)" alt="" src="http://bbs.mf8-china.com/attachments/month_0711/20071111_689325fdc1ca0a11207aFqXC55WuUrUy.png" onload="attachimg(this, 'load')" border=0>&nbsp;</P>

fpeixin

多谢各位了,终于明白了