 |
| |||
| orifice (orificium, ostium); aperture (orificium, ostium); opening (orificium, ostium) | |||
| aperture: 17 phrases in 7 subjects |
| Communications | 2 |
| High energy physics | 1 |
| Medical appliances | 3 |
| Microelectronics | 1 |
| Nuclear physics | 3 |
| Optics branch of physics | 6 |
| Радиоактивное излучение | 1 |