rare alkaline earth metal

基本解释

Adding some rare-earth metal to the positive material of alkaline Zn-MnO2 batteries was studied.
研究了在負極中添加氧化鐠、氧化鈰，對堿性鋅錳電池性能的影響。
However, under the same conditions, other common alkali- alkaline earth-, transition-and rare earth metal ions induced no or very little color change.
同樣條件下加入其他常見堿金屬、堿土金屬、過渡金屬離子，卻不能引起該傳感器溶液顔色的變化。
A photoluminescent material comprising a composition of halogen-substituted alkaline earth metal aluminate doped with at least one rare-earth element activator.
一種光致發光材料，其包含摻襍有至少一種稀土元素活化劑的鹵素取代的堿土金屬鋁酸鹽的組郃物。
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