逆映射

inverse map (math.)

contrary / opposite / backwards / to go against / to oppose / to betray / to rebel

to reflect (light) / to shine / to project (an image onto a screen etc)

old variant of 映[ying4]

to shine on / (math., linguistics etc) mapping

old variant of 射[she4]

to shoot / to launch / to allude to / radio- (chemistry)