例句與造句

1. the frequency modulation range is 1145mhz to 1250mhz, and the frequency step is 80khz
   系統(tǒng)頻率調(diào)制范圍為11451250mhz,步進(jìn)為80khz。
2. It's difficult to find modulation range in a sentence. 用modulation range造句挺難的