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关于扩散处理描述正确的有哪些？A.
对于铍扩散样品可见颜色浓集于棱线处
B.
扩散处理可以引发星光效应
C.
扩散处理宝石放大观察可见热处理特征
D.
常用于扩散处理的元素有Fe和Ti、Co、Be等
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