凹透鏡

ao ˉ touˋ jingˋ

(Concave) Concave lens

Cat: Math-Science-Optics (Concave lens) Next

ao ˉ

Concave, Dented, Depression, Indentation, Hollow

透鏡 touˋ jingˋ

(Lens) Lens

Concave

Dented

Depression

Hollow

Indentation

Appear

Complete

Let out

Pass through

Penetrate

Pierce

Show

Thorough

Eyepiece

Glasses

Lens

Lenses

Mirror

Reflector

Refractor

Scope

Spectacles

透鏡

Lens

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