| |||
| 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) | |||
|
pankratisches System : 4 phrases in 2 subjects |
| General | 1 |
| Optics branch of physics | 3 |