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| Newtonian focus | |||
| focal point | |||
| image focus | |||
| primary narrowing | |||
| prime focus (телескопа); principal focus (телескопа) | |||
| principal focus (point) | |||
| prime focus | |||
| principal focus | |||
| principal focus (параллельных лучей) | |||
| focus | |||
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| focuses | |||
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главный фокус : 15 a las frases, 6 temas |
| Astronomía | 3 |
| Automóviles | 1 |
| Cartografía | 1 |
| Geofísica | 3 |
| Medios de comunicación en masa | 5 |
| Nanotecnología | 2 |