rare element, 1923, Modern Latin, from Hafnia, Medieval Latin form of Danish Havn "harbor," the usual pre-1400 name of Copenhagen, Denmark, where the element was discovered by physicist Dirk Coster (1889-1950) and chemist George de Hevesy (1885-1966).
实用例句
1. And how is it known that Mars had hafnium - 187 ?
那么是如何知道火星有铪 -187 的 呢 ?
来自互联网
2. The field emission properties of hafnium coated carbon nanotubes ( CNTs ) were investigated.
研究了表面沉积铪膜并进行后处理对碳 纳米管 膜场电子发射性能的影响.
来自互联网
3. This activator is acyl amine - the hafnium activator that ether is a foundation.
该催化剂为酰胺 - 醚为基础的铪催化剂.
来自互联网
4. Chemical form of hafnium is perchlorate or nitrate.
