Preferably, the polycrystalline dysprosium oxide has been doped with one or more of europium, cerium, or terbium in an amount from about 0.1 to about 10 percent by weight on an oxide basis.
优选地，该多晶氧化镝掺杂有铕、铈和铽中的一种或多种，所掺杂的铕、铈和铽中的一种或多种的含量基于氧化物在重量百分比约0.1至约10的范围内。
Preferably, the polycrystalline dysprosium oxide has been doped with one or more of europium, cerium, or terbium in an amount from about 0.1 to about 10 percent by weight on an oxide basis.
优选地，该多晶氧化镝掺杂有铕、铈和铽中的一种或多种，所掺杂的铕、铈和铽中的一种或多种的含量基于氧化物在重量百分比约0.1至约10的范围内。
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