biconcave
中文解釋
wordnet sense
Collocation Usage
Collins Definition
Adjective
Concave on both sides,
/bīˈkänˌkāv/,/ˌbīkänˈkāv/,
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Concave on both sides,
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Concave on both sides
Web Definitions:
- concave on both sides
- A lens is an optical device with perfect or approximate axial symmetry which transmits and refracts light, converging or diverging the beam. A simple lens consists of a single optical element. ...
- Both lens surfaces, front and back, are concave.