a soft silvery metallic element of the alkali metal group; burns in air and reacts violently in water; occurs in carnallite and lepidolite and pollucite
rubidium的用法和樣例：
例句
用作名詞 (n.)
The rubidium lamps and cells are now obtainable only for replacement. 現在能夠得到的銣光源和容器僅作備用。
A digital servo system for rubidium frequency standards was designed with microcontroller unit,ADC and DAC. 分析了銣頻標內鎖頻環路相敏檢波基本原理和數字伺服的基本方法。
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