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pleochroism n.【理】多向色性。adj.-chroic

pleochromatism

Both the methods for measuring such optical constants as cleavage angle , interference color level , extinction angle , length sign , optical sign , optic angle , pleochroism formula , absorptivity formula and the determining program for transparent minerals will be emphasized to lecture 重點講授透明礦物解理夾角、消光角、延性符號、干涉色級序、光性符號、光軸角、多色性公式、吸收性公式的測定方法和透明礦物的鑒定程序。

Pleochroism and pleochroism ' s formation mechanism of gem quality corundum 剛玉族寶石的多色性及形成機理