Normally, the measured spectral line for the superheated iron atoms would show up as a symmetrical peak. 通常，所測得的超高溫鐵原子光譜線會顯示出一個均勻的尖頂。
After a little argon was mixed, the breakdown voltage of discharge obviously decreased.The spectral line intensities of nitrogen molecules and nitrogen atoms increased. 在大氣中加入少量氬氣后，擊穿電壓明顯降低，在相同電壓條件下，氮分子光譜線和氮原子光譜線強度都增強。
A particular spectrum line corresponds to a certain definite light wavelength. 某特定的譜線就代表一個確定光的波長。
In astronomical situations, the natural line width is seldom directly observed. 在天文學研究中，譜線固有寬度很少能直接觀測到。
