三色光度学 three color photometry

三色光栅 Three color grating

三色光源 High intensity RGB LED

三色光学分离器 trichromatic optical separator

三色光度测量 three-color photometry

三基色发光二极管 tri-phosphor LEDS ; triphosphor LED ; tri-phosphor LED ; nbsp

三基色稀土荧光粉 tri-phosphor Fluorescent Powder

三色滤光片 tricolor filter ; three-color filter

三色光头球 tricolor bald ball