256 cells arrayed four quadrants photoelectric sensor
absolute photoelectric encoder
active photoelectric transducer
atomic photoelectric effect
bridge-type photoelectric amplifier
Direct-reading photoelectric AES
external photoelectric effect
filter photoelectric photometer
gamma-ray photoelectric effect
incremental photoelectric encoder
infrared photoelectric sensor
infrared photoelectric switch
intelligent photoelectric
inverse photoelectric effect
one-way photoelectric triangulated height
photoelectric =photoelectrical
photoelectric absorption
photoelectric absorption coefficient