The Bunsen flame becomes smaller, then burns in the burner tube, and finally goes out rapidly. 本生焰縮小，然後在燈管中燃燒，最後迅速熄滅。
This current races through the lamp's glass tube, which is filled with a mixture of gas and mercury vapor at low pressure. 電流流經燈管的電子管時，那裡充滿了一種混合氣體及貢蒸汽處於一種低壓狀態。
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