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jennylove(½ð±Ò+5): лл 2011-06-10 11:54:44
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2Â¥2011-06-09 22:28:15
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2Â¥: Originally posted by bible2 at 2011-06-09 22:28:15
mirror   (x,y,z) ¡ú (-x,y,z)

inversion center   (x,y,z) ¡ú (-x,-y,-z)

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