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bifocal是什么意思

bifocal

美[ˌbaɪ'fəʊkl]  英[ˌbaɪ'fəʊkl]
adj.  双焦点的
n.  双重焦点透镜;双光眼镜
  名词:bifocalism

英英释义

Adjective
  1. having two foci;

    "bifocal eyeglasses"

例句

用作形容词(adj.)
  1. Some manufacturers are also developing bifocal IOLS, which may eliminate the need in some patients for prescription glasses after surgery.有的制造商在研究双焦点的人工晶体,这可能会让一些手术后需要用处方眼镜的患者不再需要眼镜。
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