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| progressive power lens (r313); power-variation lens (r313); progressive lens (CubaLibra); PAL (progressive addition lens: The progressive addition lens (PAL) is a spectacle lens design with progressive refractive power changes across the lens surface to provide om_ya) | |||
| прогрессивная линза: 2 фразы в 1 тематике |
| Оптика раздел физики | 2 |