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| Brechungsvermögen n | |||
| Brechkraft (the reciprocal of the focal length; measured in diopters); Brechwert m (the reciprocal of the focal length; measured in diopters) | |||
| Brechkraft; Brechungskraft f | |||
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| Brechungsvermögen n | |||
| Brechkraft (the reciprocal of the focal length; measured in diopters); Brechwert m (the reciprocal of the focal length; measured in diopters) | |||
| Brechkraft; Brechungskraft f | |||