hafnium
美['hæfniəm] 英['hæfniəm]
n. [化]铪(金属元素；符号 Hf)
英英释义
Noun- a grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons
例句
- Why can you always have vexed thing hafnium? 为什么总是会有烦恼的事铪？
- Characters of hafnium oxide deposited by reactive ion-assisted deposition[J]. 引用该论文 王聪娟;晋云霞;邵建达;范正修.
- Non hafnium superalloy DZ4, which is widely applied in service aero engines in present, is introduced. 介绍了目前在役发动机上使用最多的无铪定向凝固合金DZ4及其可铸性。
- The extraction separation process for zirconium and hafnium with MIBK was briefly reviewed in this paper. 简要评述了用甲基异丁基酮(MIBK)萃取分离锆铪方法的基本原理、分离工艺和条件、萃取设备。
- 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。
- 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。
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