例句與造句

1. Additionally, television translators and signal boosters can be used to rebroadcast a terrestrial television signal using an otherwise unused channel to cover areas with marginal reception . ( see North American broadcast television frequencies for frequency allocation charts)
2. :: For the record, cellular band radios are not permitted for use as walkie-talkies . ( These radios operate in a controlled spectrum, in the United States, this is governed by the NTIA, and you can see their frequency allocation chart ).
3. It's difficult to find frequency allocation chart in a sentence. 用frequency allocation chart造句挺難的