NAS
📖 中文释义
- 全国科学院(美国)
- [计] 网络应用支持
📘 English Definition（英文释义）
- n a silvery soft waxy metallic element of the alkali metal group; occurs abundantly in natural compounds (especially in salt water); burns with a yellow flame and reacts violently in water; occurs in sea water and in the mineral halite (rock salt)