| 释义 |
haf·ni·um 英ˈhæfniːəm美ˈhæfniəmAHDhăfʹnē-əm 高COCA¹²¹⁴²⁶iWeb⁵²⁶²⁰
基本英英词源搭配记法近义反义例句
n.化铪金属元素;符号 Hf¹⁰⁰简写符号Hf
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来自拉丁语Hafnia,现丹麦首都哥本哈根拉丁语名，因这种金属元素于哥本哈根首次发现而得名，字面意思为港口，词源同haven,copenhagen.hafnium metal海绵铪hafnium complex钬络合物hafnium carbide碳化铪hafnium filament铪丝hafnium hydroxide氢氧化铪hafnium nitride氮化铪hafnium silicate硅酸铪
hafn-ium生化名词⇒n.化铪金属元素;符号 Hf近义词 HF高频（=High Fre…
In this paper, the distributing, characteristic and the significance in the economy of and the construction of national defense on zirconium and hafnium resource were briefly introduced.
简要介绍了锆铪资源的分布、特点，在国民经济和国防建设中的意义； chemyq
The technology for separation of zirconium and hafnium is the key to prepare reactor- grade productions of zirconium and hafnium.
锆铪分离技术是生产核级锆和核级铪的核心技术。 rm-journal
And how is it known that Mars had hafnium-187?
那么是如何知道火星有铪-187的呢？ ecocn
Chemical form of hafnium is perchlorate or nitrate.
铪的化学形态为过氯酸盐或硝酸盐。 dictall
Perhaps the most important use of sodium metal is as a reducing agent in producing high melting point metals, such as titanium and hafnium.
也许金属钠最重要的用途是作为还原剂生产高熔点金属，比如钛和铪。023java
So the research of preparation of ceramic scintillators containing hafnium compounds or hafnium has been becoming more and more popular.
因此制备铪化合物或含铪化合物的闪烁陶瓷，是近年的新材料研究热点之一。 fabiao
The first they dealt with by coating the top of the device with oxides of hafnium, molybdenum and titanium, in layers about100 nanometres thick.
第一，他们在装置的上处理和涂上铪，钼，钛氧化物层，这层物质仅有100纳米厚。 ecocn |