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单词 tetrahedrid
释义 tetrahedrid, a. Cryst.|tɛtrəˈhiːdrɪd, -ˈhɛdrɪd|
[f. as tetrahedral a. + -id2.]
= tetrahedral a. 2.
1895Story-Maskelyne Crystallogr. 208 Tetrahedrid mero⁓symmetry. The second case of holo-systematic hemi-symmetry, in which every normal is represented by a single face, is that [etc.].Ibid. 206, 207, 210.
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