 |
| |||
| frequency extension; frequency-band extension; bandwidth expansion; frequency-band widening | |||
| расширение диапазона частот: 2 短语, 2 学科 |
| 媒体 | 1 |
| 电信 | 1 |
|
| |||
| frequency extension; frequency-band extension; bandwidth expansion; frequency-band widening | |||
| расширение диапазона частот: 2 短语, 2 学科 |
| 媒体 | 1 |
| 电信 | 1 |