SR
📖 中文释义
- [计] 开关寄存器
- [化] 同步辐射
📘 English Definition（英文释义）
- n a soft silver-white or yellowish metallic element of the alkali metal group; turns yellow in air; occurs in celestite and strontianite
- n the unit of solid angle adopted under the Systeme International d'Unites