凹透镜
/kˌɒmpətˈɪʃən ˈɹɪŋ ˈtuː/
n
English: concave lens · 凹透镜
释义:Corrects myopia by causing light rays emanating from an object to diverge and project an image onto the focus of the retina. contact lenses
English: concave lens · 凹透镜