photo-electricity
(1)光电现象
(2)光电学

• photetch
• photfluorgram
• photfluorgraphy
• photfluoroscope
• photformer
• photfragmentation
• photgen
• photgraphic telescope
• photic
• photicon
• photic zone
• photion
• photism
• photistor
• photkinesis
• photmson
• photmural
• photo
• photoabsorption
• photo-achromatism
• photoacoustic determination
• photoacoustic spectroscopy
• photoacoustic technique
• photoacoustic theory
• photoactinic