单词	f—数
释义	同f—数--光圈值
随便看	picture description instruction，pdi picture description language picture description language，pdl picture desk picture detect picture detection picture dictionary picture display picture distortion picturedom picturedrome picture editing picture editor picture element picture element density picture element matrix picture element--pel picture element {pixel} picture elements picture element signal picture element，pel picture encoding picture exchange picture exchange communication system picture exchange communication system {=pecs}