我不认识这个地方。
No one can ever know this place with me.
没有人曾知道我这个地方。
This is because very few people know this place.
那是因为很多人都不知道这个地方。
Oh, I know this. I've been here before and I know this place very well,
哦,这个我知道,我去过那里,我对那个地方很熟悉。
So, clearly, if we remove this barrier mixing takes place and obviously you know that that happens from lots of experience.
所以很明显,如果我们拿走隔板,气体混合就会发生,我们从大量的实际经验中就可以知道这些。
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?
应用推荐