Alumina is really stable, which is why it takes so much energy to make aluminum.

矾土相当稳定，这就是为什么需要消耗大量的能量制备铝了。

麻省理工公开课 - 固态化学导论课程节选

And so, for that, I want to look at the production of titanium by the Kroll process.

因此而言，我想看看克劳尔法,制备钛的工艺。

麻省理工公开课 - 固态化学导论课程节选

In addition to studying molecules and making molecules, some chemists Tim Swager want to detect molecules, and a chemist who likes to detect molecules TNT is Tim Swager. So, Tim Swager's lab has designed sensors that detect vapors, Fido and so they will detect TNT, for example.

除了研究和制备分子,有些化学家想要探测分子,其中的一位就是，他的实验组设计了用来探测蒸汽的感应器,可以用来检测比如说,而且他把化学应用到这个机器人手臂里，他们叫它。

麻省理工公开课 - 化学原理课程节选

While he was still in Luxembourg, just before World War II broke out, he emigrated to the United States and finished his career in the Pacific Northwest where he helped make huge quantities of titanium.

他一直住在卢森堡，在二次世界大战爆发前，他移民到了美国,后半生在太平洋西北部,他制备了大量的钛结束了他的事业。

麻省理工公开课 - 固态化学导论课程节选