“X-ray crystallography”的概念、定义、习题解题方法及翻译-物理辞典

单词	X-ray crystallography
释义	X-ray crystallography The use of X-ray diffraction to determine the structure of crystals or molecules. The technique involves directing a beam of X-rays at a crystalline sample and recording the diffracted X-rays on a photographic plate. The diffraction pattern consists of a pattern of spots on the plate, and the crystal structure can be worked out from the positions and intensities of the diffraction spots. X-rays are diffracted by the electrons in the molecules and if molecular crystals of a compound are used, the electron density distribution in the molecule can be determined. See also neutron diffraction
随便看	permanent magnet permeability permittivity permutations and combinations perpetual motion personal computer perturbation perturbation theory perversion PET peta- pewter Pfund series pH pH scale phase phase angle phase diagram phase modulation phase rule phase space phase speed phase transition phase-contrast microscope phases of the moon

物理辞典收录了3346条物理词条，基本涵盖了常用物理知识及物理英语单词词组的翻译及用法，是物理学习的有利工具。