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2014年3月7日 Science+ y' w" s# T6 q4 x* ^( g/ i
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' Z7 |" |2 k0 yCOVER Precession image reconstructed from x-ray diffraction data collected from a benzene single crystal. For the past 100 years, x-ray crystallography has been a key tool for determining the structures of ever more complex chemical and biochemical systems. See the special section beginning on page 1091 and at www.sciencemag.org/special/crystallography. Image: Judith A. K. Howard and Michael R. Probert
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