单词thorium dioxide
un.: 二氧化钍
二氧化钍
The use of thoria (thorium dioxide) as an agent was rapidly stopped as thorium causes liver cancer.
而使用氧化钍（二氧化钍）作为代理人迅速停止钍导致肝癌。
Determination of thorium dioxide in thorium-tungsten alloys--Weight method
钨钍合金中二氧化钍的测定重量法