rare alkaline earth metal

基本解释

Adding some rare-earth metal to the positive material of alkaline Zn-MnO2 batteries was studied.
研究了在负极中添加氧化镨、氧化铈，对碱性锌锰电池性能的影响。
However, under the same conditions, other common alkali- alkaline earth-, transition-and rare earth metal ions induced no or very little color change.
同样条件下加入其他常见碱金属、碱土金属、过渡金属离子，却不能引起该传感器溶液颜色的变化。
A photoluminescent material comprising a composition of halogen-substituted alkaline earth metal aluminate doped with at least one rare-earth element activator.
一种光致发光材料，其包含掺杂有至少一种稀土元素活化剂的卤素取代的碱土金属铝酸盐的组合物。
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