此外，从模拟电视信号到数字电视信号的切换也释放了广阔的频道(698 - 806mhz)。
Also, a large frequency spectrum (698-806 MHz) was freed by switching over from analog TV to the digital one.
2012年，英国将完成模拟信号向数字信号的转换，这就意味着几乎每家每户都可自由选择多种频道。
The switchover to digital signal by 2012 means that multichannel choice will soon be available to almost all households.
这种类型的认证可以视为对物理标记的数字模拟。
This type of authentication can be seen as a digital analog to having a physical token.
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