Fluorescent light bulbs appear white but reveal specific emission lines instead of a continuous spectrum.
荧光灯泡看起来是白色的，但显示的是特定的射线，而不是连续的光谱。
Fluorescent light bulbs
原声例句
PBS趣味科普
2009 English Cafe
They don't think that they're helping solve the problem very much just by or only by changing their light bulbs to special kinds of light bulbs that saves energy – fluorescent light bulbs.
他们不认为仅仅通过或仅通过将灯泡换成特殊类型的节能灯泡——荧光灯泡，就可以帮助解决问题。
英语百科
Fluorescent lamp
![Typical F71T12 100 W bi-pin lamp used in tanning beds. The (Hg) symbol indicates that this lamp contains mercury. In the US, this symbol is now required on all fluorescent lamps that contain mercury.[1]](/uploads/202501/13/Tanninglamp0047.jpg)
A fluorescent lamp or a fluorescent tube is a low pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in the gas excites mercury vapor which produces short-wave ultraviolet light that then causes a phosphor coating on the inside of the lamp to glow. A fluorescent lamp converts electrical energy into useful light much more efficiently than incandescent lamps. The typical luminous efficacy of fluorescent lighting systems is 50–100 lumens per watt, several times the efficacy of incandescent bulbs with comparable light output.
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