- principal symmetry plane
- 衷称面
English-Chinese dictionary of mechanical engineering (英汉机械工程大词典). 2013.
principal symmetry plane
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Symmetry operation — In the context of molecular symmetry, a symmetry operation may be defined as a permutation of atoms such that the molecule or crystal is transformed into a state indistinguishable from the starting state. Two basic facts follow from this… … Wikipedia
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