A kind of field ionization gas sensor was designed and fabricated, the corresponding test equipment for current and voltage measurement was established.

设计并研制出基于一维纳米材料的场致电离传感器，建立了相应的电流或电压测试平台。

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Progress of the research in field ionization gas sensor was investigated and there are still some disadvantages: high working voltage, bad selectivity and stability.

在对国内外场致电离气体传感器研究进展进行详细调研的基础上，发现它始终存在着工作电压高、选择性差和稳定性差问题。

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A long tendril of colder gas and dust extends many light years into the void from the receding ionization front.

低温气体和尘埃长长的卷须从渐行渐远的电离前沿一直延伸到数光年远的太空。

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This is called ionization, gas phase species loses an electron.

而这个过程是离子化，气相组分失去一个电子。

麻省理工公开课 - 固态化学导论课程节选

So we are really looking at this reaction here H+ for ionization. It is H gas neutral goes to H plus in the gas phase plus the electron. And, furthermore, we can have multiple ionization energies.

所以我们真正看到的是,电离，它是在气相中H变为,和电子的过程，还有，我们能电离能加倍。

麻省理工公开课 - 固态化学导论课程节选