di.op.ter
n.Abbr. D.(名词)缩写 D.
A unit of measurement of the refractive power of lenses equal to the reciprocal of the focal length measured in meters.
屈光度:透镜或棱镜折光率的一种量度,等于以米计算焦距之倒数
来源:
Obsolete diopter [an instrument for measuring angles]
废语 diopter [测量角度的仪器]
from Latin dioptra
源自 拉丁语 dioptra
from Greek
源自 希腊语
dia- [dia-]
dia- [前缀,表.完全的,有始有终的.]
optos [visible] * see ok w-
optos [可见] *参见 ok w-
【引伸】
diop.tral