STANT 发表于 2025-3-25 07:13:25
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Symmetry of Finite Objects,many things that are not, possesses symmetry, which means that some operation —a rotation, a mirror reflection, an inversion, a translation, or some combination of these—brings it to a state that is indistinguishable from its original state. The mathematical treatment of symmetry makes extensive use清楚说话 发表于 2025-3-25 23:57:27
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Significance and Accuracy,eter, .?” In the two-parameter problem of the previous chapter the question could be phrased, “Is the value of the coefficient, ., ‘significantly’ different from zero?” One way to answer this question is to find some . estimate of σ. and determine whether the spread of the values of ., about their mHEW 发表于 2025-3-26 14:18:05
Constrained Crystal Structure Refinement,le discussion of the nature of the appropriate model, except for the implicit one that the first partial derivatives of the predicting function with respect to all parameters must exist. We shall now turn to the specific question of the determination of the parameters of a crystal structure by fittiHERE 发表于 2025-3-26 20:16:34
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