The question raised by radio frequencies - microwaves or radio frequencies of the UHF or VHF band - was whether the electromagnetic could have a similar effect at very low levels.
Band Aid have raised a great deal of money with their record but people are quick to forget.
救援组织筹集了大量资金，但是人们很快就把这饥馑的事放在脑后了。
3
The out band spurious spectrum is limited by raised cosine filter in transmitter, and the shadow effect can be removed by combining the signal power of two branches in receiver.