单词	crystallography
释义	crystallography /ˌkrɪstəˈlɒɡrəfi / noun [mass noun] The branch of science concerned with the structure and properties of crystals.She threw herself into science - physics, chemistry and crystallography.... His interests were always wide and this is reflected in the range of courses that he was teaching around this time: descriptive geometry, crystallography, optics, mechanics and machine design. For such a comparison to be completed, the availability of the atomic structure from x-ray crystallography and/or from NMR spectroscopy is very helpful. Derivatives crystallographer /ˌkrɪstəˈlɒɡrəfə / noun ... Despite the attempts of crystallographers to catch IGP synthase in its functional form, to date, the only movement reported in these four residues was the slight bending of the last carbon-nitrogen group of K99. Because many crystallographers have their preferred crystallization techniques, experimental work is needed to discern whether these patterns represent human preferences or real chemical associations. X-ray crystallographers determine the three-dimensional shape of a molecule by blasting a beam of X-rays through a crystallized sample of the molecule and then analyzing the pattern of the scattered beam. crystallographic /ˌkrɪstələˈɡrafɪk / adjective ... These are called space groups, crystallographic space groups, or Shoenflies groups. They usually involve three numbers or, in the case of hexagonal and rhombohedral symmetries, four numbers, one for each crystallographic axis. It is pale pink and has physical, optical, and crystallographic properties similar to those of the other monoclinic members of the amphibole group. crystallographically adverb ... In both cases an asymmetric unit composed of two crystallographically distinct molecules (A and B) was obtained, and the two units differ, with a root mean square deviation value of 0.6. The structural features of the intermediate structures described crystallographically are reproduced by the simulation, indicating that the intermediate structures are mechanistically and dynamically feasible. The molecular level conductance computations, although qualitatively of great interest, do not seem to imply the three-ion occupancies suggested both electrophysiologically and crystallographically.
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