nominal center frequency造句

例句与造句

1. The frequency of an FM broadcast station ( more strictly its assigned nominal center frequency ) is usually an exact multiple of 100 kHz.
2. You tune the radio's local oscillator to the nominal center frequency and it's easy to produce an audio signal that's proportional to the difference in frequency of the local oscillator and the radio signal.
3. Most of the energy therefore falls within an approximate bandwidth of 2 * ( 75 + 53 ) = 256 kHz . ( Geographically close FM broadcast transmitters are almost always assigned nominal center frequencies at least 400 kHz apart ).
4. It's difficult to find nominal center frequency in a sentence. 用nominal center frequency造句挺难的