The microorganisms can change the chemical valence of the vanadium, thereby changing its toxicity.

表明微生物能改变钒的价态。从而改变其毒性。

youdao

Only strictly controlling the temperature can it be prepared what needed especially for the Cobalt, Manganese precursors because of many chemical valence.

只有控制严格的温度才能制备出所需的产物，尤其对于化合价较多的钴、锰前驱物要尤为重视。

youdao

Now with this framework, I said that talking about these valence electrons might give us some insight into chemical reactivity.

现在在这个结构下，我说过讨论这些价电子可能会让我们对化学反应有更深的理解。

youdao

So, now with this framework, I said that talking about these valence electrons might give us some insight into chemical reactivity.

所以，现在对于这个结构，我认为讨论价电子能,会让我们对化学反应有更深的领悟。

麻省理工公开课 - 固态化学导论课程节选

So we can think about something I mentioned last time, which is when we're thinking about chemistry and what's really interesting in terms of chemical reactions, it's mostly valence electrons we're talking about, those are the ones that tend to be involved in chemical reactions.

我们可以考虑一下我上次提到过的一件事，那就是如果我们讨论化学,以及什么是化学反应中,真正令人感兴趣的东西，我们讨论的几乎都是价电子，它们才是在化学反应中,真正起作用的部分。

麻省理工公开课 - 化学原理课程节选