So, we can say that -- if we have neon here and we want to think about what's isoelectronic, -- f minus would be isoelectronic. We also have oxygen -- what would the charge on oxygen be?

那么，我们可以说--如果我们这里有氖原子,而我们想知道与它等电子的是什么，负一价的氟离子就是与它等电子的，我们还有氧-,氧应该是几价的？

youdao

There is no obvious difference in quality combustion speed and emission intensity in the condition of different charge density by means of F test.

利用F检验确定了不同装药密度下，质量燃烧速度以及辐射强度等没有显著性差异。

youdao

The repaired or new Equipment parts will be delivered to the Purchaser F. O. B. Corporation's Plant free of charge if the Equipment part returned was warranted hereunder.

修理件或调换的新件在公司的工厂按出厂价交付买方，如所退设备部件属本协议的担保范畴，则可免费。

youdao

So, we can say that -- if we have neon here and we want to think about what's isoelectronic, -- f minus would be isoelectronic. We also have oxygen -- what would the charge on oxygen be? Um-hmm, right. 2 minus.

那么，我们可以说--如果我们这里有氖原子,而我们想知道与它等电子的是什么，负一价的氟离子就是与它等电子的，我们还有氧-,氧应该是几价的？没错，负二价。

麻省理工公开课 - 化学原理课程节选

So, f c, I think you all know is formal charge.

那么，FC，我想大家都知道这是形式电荷。

麻省理工公开课 - 化学原理课程节选

Automobile manufacturers, such as Ford (NYSE: F) and GM (NYSE: GM), charge a lot of money for their in-car touch panels, many lower end models are produced the old-fashioned way.

FORBES: How Long Until Every Display is a Touch Screen?