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______ crystal system has three axes (a1, a2and a3) in the x-y plane 120° apart and a fourth axis (z) at 90o to the x-y plane. The intercepts along the three axes in the horizontal plane are equal in length, but the fourth intercept, labeled c, is of a different length.
A) Cubic
B) Hexagonal
C) Monoclinic
D) Tetragonal
答案
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