The Bunsen flame becomes smaller, then burns in the burner tube, and finally goes out rapidly. 本生焰缩小,然后在灯管中燃烧,最后迅速熄灭。
This current races through the lamp's glass tube, which is filled with a mixture of gas and mercury vapor at low pressure. 电流流经灯管的电子管时,那里充满了一种混合气体及贡蒸汽处于一种低压状态。