optical glasses

英 美
  • 平光眼镜
  • glasses n.眼镜;双筒镜名词glass的复数形式.
  • optical adj.视觉的;光学的
名词 optical glass:
  1. clear homogeneous glass of known refractive index; used to make lenses

    1. Nowadays, these glasses are known as bifocals.
      如今,这些眼镜被称作双光眼镜。