columbite

columbite

1. ferro columbite

n. 铌铁矿(铁铌矿)

2. mangano columbite

n. 锰铌铁矿

3. columbite precursor method

先驱体法

4. Keywords columbite precursor method;quaternary system;piezoelectric ceramics;morphotropic phase boundary（MPB）;high power;

先驱体法;四元系;压电陶瓷;准同型相界;大功率;

5. Keywords atomic absorption spectrometry;CaO;columbite;steel cinder;

原子吸收法;氧化钙;铌精矿;冶炼炉渣;

6. Tin, columbite, lead and zinc were also exported, along with gold, and prior to the discovery of oil, the export of solid minerals served as a major foreign exchange earner;

在发现石油之前，除了黄金，尼日利亚出口锡、钶铁矿、铅和锌，这些固体矿产的出口为尼日利亚带来了一大笔外汇收入。

7. at one time, Nigeria was the world's largest exporter of columbite.

尼一度曾是世界上最大的钶铁矿出口国。

8. We have interest to buy tantalite, Ta2O5, coltan, columbite in Uganda and East African region.

我们有意在乌干达和东非地区购买钽铁矿、五氧化二钽、钽矿石、钶铁矿。

9. On the basis of detailed studies on columbite from the Suzhou granite, tantalite has been found for the first time in this granite.

本文在研究苏州花岗岩中铌铁矿的基础上,首次在该地区发现了钽铁矿。

10. The results showed that dielectric constant decreased ,the loss increased because of pyrochlore phase and it was pretented effectively by columbite precursor routes.

研究发现,焦绿石相的存在造成了低介电常数、高损耗;

11. Keywords Columbotantalite;Granite;Columbite;Exploitation;Feasibility study;Suzhou;Jiangsu;

钽铌矿;花岗岩;铌钽铁矿;开发;可行性研究;江苏苏州;

12. CONDITIONS OF FORMATION OF WOLFRAMITE, CASSITERITE,COLUMBITE, MICROLITE AND TAPIOLITE AND EXPERIMENTALSTUDIES ON THE VARIATION OF Nb AND Ta INWOLFRAMITE AND CASSITERITE

黑钨矿、锡石、铌铁矿、细晶石、铌钽铁矿生成条件及黑钨矿和锡石中钽、铌含量变化的实验研究