light emitting diode 1
发光二极体 light emitting diode 2
(LED)发光二极管
light-emitting diode
(LED)发光二极体

• extensometer
• extent
• extenuation
• exterior focusing
• exteriority
• exteriro telescope
• external conical refraction
• external diameter
• externally biased ring laser
• externally modulated laser
• external mirror
• external optical modulater
• external optical modulation
• external photoeffect detector
• external photoelectric effect
• external quatum effieciency
• external screw thread
• external transmittance
• extinction
• extinction angle
• extinction coefficeint
• extinction coefficient
• extinction meter
• extinction radtio
• extinction ratio