the cross section of an octahedron is a square.
八面体的横断面是正方形。
the cross section of an octahedron is a square.
八面体的横断面是正方形。
Crystal Habits include the cube, octahedron and pyritohedron (a dodecahedron with pentagonal faces) and crystals with combinations of these forms.
晶体形态常
立方体、五角十二面体，
八面体，或集合晶簇。
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