An electrode used in certain electron tubes to provide secondary emission.
中间极, 二次发射电极一种用于一定电子管作第二次发射电极
emission of visible light by living organisms such as the firefly and various fish, fungi, and bacteria.
生物发光生物体的可见光发射, 如萤火虫、彩色鱼类、真菌类和细菌
In cathode ray tube display, the continuation of light emission from phosphor after excitation by the electron beam.
在阴极射线管显示器中, 用电子束激励后荧光物质光发射的持续现象。
