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jiayou201101: ½ð±Ò+10, ·­ÒëEPI+1, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2015-12-19 09:03:02
Please explain why Eu is doped and what are the characteristics of Eu?
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