| 单词 | face symbol |
| 释义 | > as lemmasface symbol face symbol n. Crystallography a symbol specifying the face of a crystal or other polyhedron, esp. the set of Miller indices (see Miller index n. at Miller n.2). ΘΚΠ the world > matter > chemistry > crystallography (general) > [noun] > symbols > designating face or plane face symbol1857 1857 Philos. Trans. (Royal Soc.) 147 183 The letters of a face-symbol may be taken forwards or backwards from any letter without altering the meaning of the symbol. 1903 Athenæum 17 Jan. 86/3 How to convert the face-symbols of Naumann into those of Miller. 1959 C. S. Hurlbut Dana's Man. Mineral. (ed. 17) ii. 32 The zone symbols are inclosed in brackets, as [uvw], to distinguish them from face and form symbols. 1994 Proc. Royal Soc. A. 444 229 The face symbol for the edge-stellated derivative is AiBjCk. < as lemmas |
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