大多数包含多原子离子的化合物是离子的，同上一节讨论的化合物。

Most of the compounds containing polyatomic ions are ionic, as were the compounds discussed in the previous section.

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本文阐述了束-箔方法测量原子、分子离子激发态寿命的原理和优点，阐述了我们的实验过程和得到的一些结果。

The principles and advantages of measuring lifetime of atomic and molecular excited states using the beam-foil method are described.

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本文的研究主要包括以下几个方面：首先，一维线性多原子分子离子与强激光场相互作用的谐波研究。

The main jobs of this article are as follows: Firstly, the research on the one-dimension multi-atom molecular ions exposed in the ultra-short laser pulse.

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We started with gaseous sodium to make gaseous sodium ion and gaseous atomic chlorine to make gaseous chloride ion through electron transfer.

我们从气态的钠开始,得到气态的钠离子,从气态的氯原子,通过电子转移得到氯离子。

麻省理工公开课 - 固态化学导论课程节选

Electron affinity is actually the ability of an atom, or we could also talk about an ion to gain electrons.

电子亲和能其实就是一个原子，或者我们也可以讨论离子获取电子的能力。

麻省理工公开课 - 化学原理课程节选

And then, if we have time at the end, we'll introduce one last topic, which is isoelectronic atoms and ions.

最后，如果有时间的话，我们将再介绍最后一个主题：,等电子原子与离子。

麻省理工公开课 - 化学原理课程节选