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| transfocator; variable focus lens; variable-focal-length lens; zoom lens | |||
| pancratic lens system | |||
| continuously variable zoom system; variable-power optical system; pancratic system; zoom system (it provides a means of continuously varying the total microscope magnification) | |||
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pankratisches System : 4 фрази в 2 тематиках |
| Загальна лексика | 1 |
| Оптика розділ фізики | 3 |