Experiment is done on the acid hydrolysis of titanium-columbite-tantalite ore difficult to decompose.
对难分解的钛钽铌矿的酸分解工艺进行了试验研究。
The measurement indicates that the optimized performance can be achieved by three-element composite columbite precursor methods.
性能测试结果表明，三组元复合先驱体法制成样品的性能最佳。
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。
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。
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