 |
| |||
| Newtonian focus | |||
| image focus | |||
| primary narrowing | |||
| prime focus (телескопа); principal focus (телескопа) | |||
| prime focus | |||
| focus | |||
| principal focus | |||
| principal focus (point) | |||
| principal focus (параллельных лучей) | |||
| focal point | |||
| |||
| focuses | |||
|
главный фокус : 15 фраз в 6 тематиках |
| Автомобили | 1 |
| Астрономия | 3 |
| Геофизика | 3 |
| Картография | 1 |
| Нанотехнологии | 2 |
| Средства массовой информации | 5 |