“plane group”的概念、定义、翻译、参考文献-科学参考

单词	plane group
释义	plane group [`plān ´grüp] ^{CRYSTALLOGRAPHY} The group of operations (rotations, reflections, translations, and combinations of these) which leave a regular, periodic structure in a plane unchanged. ^MATHEMATICS One of 17 two-dimensional patterns which can be produced by one asymmetric motif that is repeated by symmetry operations to produce a pattern unit which then is repeated by translation to build up an ordered pattern that fills any two-dimensional area. Also known as plane symmetry group.
随便看	skew chisel skewed bridge skewed density function skew failure skew field skew Hermitian matrix skew level gear skew lines skew product skew quadrilateral skew surface skew-symmetric matrix skew-symmetric tensor skialith skiascope skiatron skid skid boulder Skiddavin skidding skid-mounted skid platform skidway skill score skim coat

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