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A new projection description for a cubic quasiperiodic crystal (CQC), including a projection matrix, diffraction-intensity calculation and a linear phason matrix, has been proposed. The simulated electron diffraction patterns with appropriate phason parameters agree well with the experimental ones obtained for a rapidly solidified V6Ni16Si7 alloy. The transition from the CQC to its crystalline approximants is treated using the linear-phason-strain concept.
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