Sodium vapor street lamps emit the characteristic sodium line.
钠蒸汽路灯发出特有的钠线。
Sodium vapor
原声例句
PBS趣味科普
荧屏幕后那些事儿
Despite multiple attempts to replicate it, Vlahos could only create just one working prism which meant there was only one sodium vapor camera, in the entire world.
尽管多次尝试复制它，但 Vlahos 只能制造一个工作棱镜， 这意味着全世界只有一台钠蒸气相机。
荧屏幕后那些事儿
To achieve the effect, the actors would stand in front of a white screen lit by a yellow hue from sodium vapor lights, hence its name, the sodium vapor process.
为了达到这种效果，演员们会站在白色屏幕前， 白色屏幕被钠蒸气灯的黄色调照亮， 钠蒸气过程因此得名。
中文百科
钠灯 Sodium-vapor lamp
（重定向自Sodium vapor）
钠灯，是指以金属钠蒸气为工作物质的照明装置，是气体放电灯的一种。钠灯的灯管内也会充填汞和稀有气体，但实际上起作用的是钠蒸气。钠被电离、激发后会发射出589nm的黄色光线，这些光线直接用于照明，而不是像荧光灯那样激发荧光物质发出白色的可见光。
英语百科
Sodium-vapor lamp 钠灯
（重定向自Sodium vapor）
A sodium-vapor lamp is a gas-discharge lamp that uses sodium in an excited state to produce light. There are two varieties of such lamps: low pressure and high pressure. Low-pressure sodium lamps are highly efficient electrical light sources, but their yellow light restricts applications to outdoor lighting such as street lamps. High-pressure sodium lamps have a broader spectrum of light than the low-pressure lamps, but still poorer color rendering than other types of lamps. Low-pressure sodium lamps only give monochromatic yellow light and so inhibit color vision at night.
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