所以镁的密度是贴的四分之一。

So, this is about a quarter of the density of steel.

youdao

黑药和镁的混合物具有离析的倾向。

Mixture of black powder and magnesium has a tendency to segregate.

youdao

蟹类无法在低于某一温度的情况下在血液中产生镁，镁的缺乏会导致蟹类的动作出现麻痹反应。

Crabs are unable to process magnesium in their blood below a certain temperature, and the result is a narcotic effect on the crabs' movement.

youdao

But, the reaction says I need twice as much mag as tickle if this reaction is going to go to completion.

但是这个反应告诉我们,镁的量应该是四氯化钛的两倍,如果要反应完全的话。

麻省理工公开课 - 固态化学导论课程节选

OK, so now the question is, how do we know the first place that this is a suitable reductant?

好的，现在的问题是，我们如何能知道第一步中,镁是一个合适的还原剂？

麻省理工公开课 - 固态化学导论课程节选

So, if I look at the mole ratios on the reaction over there I'm going to find that I'll be able to consume, at most, 1,029 over two, right?

所以，注意反应的摩尔比,我们会发现，1029摩尔的镁能被消耗，对吧？

麻省理工公开课 - 固态化学导论课程节选