النتائج (
العربية) 1:
[نسخ]نسخ!
12 The properties of some materials are directly related to their crystal structures. For example, pure and - deformed magnesium and beryllium, having one crystal - structure, are much more brittle (i.e., fracture at lower degrees of deformation) than are pure and - deformed metals such as gold and silver that have yet another crystal structure (see Section 7.4). 38 •
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