英语语法分析

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。