 |
| |||
| cesium-beam atomic oscillator (для измерения времени) | |||
| cesium-beam atomic oscillator; clock | |||
| мера частоты: 8 phrases in 3 subjects |
| Mass media | 4 |
| Physics | 1 |
| Technology | 3 |
|
| |||
| cesium-beam atomic oscillator (для измерения времени) | |||
| cesium-beam atomic oscillator; clock | |||
| мера частоты: 8 phrases in 3 subjects |
| Mass media | 4 |
| Physics | 1 |
| Technology | 3 |