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单词
center of symmetry
释义
WordReference Random House Unabridged Dictionary of American English © 2024
cen
′
ter of sym
′
metry,
[
Crystall.
]
Crystallography
a point within a crystal through which any straight line extends to points on opposite surfaces of the crystal at equal distances. Also called
inversion center.
Cf.
symmetry element.
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ruby-crowned kinglet
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rubáiyát of omar khayyám
rubáiyát of omar khayyám, the
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rub‘ al khali
ruc
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ruching
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更新时间:2026/2/9 11:51:20