光电

yī zhǒng guāng diàn xiàn xiàng

一种光电现象

photoelectric phenomenon

yī zhǒng guāng diàn xiào yìng

一种光电效应

photoelectric effect

yī zhǒng guāng diàn cái liào

一种光电材料

photoelectric material

guāng diàn fā shè qì

光电发射器

phototransmitter