columbite

基本解釋

We have interest to buy tantalite, Ta2O5, coltan, columbite in Uganda and East African region.
我們有意在烏干達(dá)和東非地區(qū)購(gòu)買鉭鐵礦、五氧化二鉭、鉭礦石、鈳鐵礦。
On the basis of detailed studies on columbite from the Suzhou granite, tantalite has been found for the first time in this granite.
本文在研究蘇州花崗巖中鈮鐵礦的基礎(chǔ)上,首次在該地區(qū)發(fā)現(xiàn)了鉭鐵礦。
The results showed that dielectric constant decreased ,the loss increased because of pyrochlore phase and it was pretented effectively by columbite precursor routes.
研究發(fā)現(xiàn),焦綠石相的存在造成了低介電常數(shù)、高損耗;
at one time, Nigeria was the world's largest exporter of columbite.
尼一度曾是世界上最大的鈳鐵礦出口國(guó)。
Keywords atomic absorption spectrometry;CaO;columbite;steel cinder;
原子吸收法;氧化鈣;鈮精礦;冶煉爐渣;