a unit of measurement of the refractive power of lenses equal to the reciprocal of the focal length in metres
[diopter orig denoting an optical instrument, via French and Latin from Greek dioptra from dia- + opsesthai to be going to see]
| 单词 | dioptre |
| 释义 | dioptre(NAmer diopter) |
| 随便看 |
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