Low and intermediate frequency instability models are taken up first . 首先處理低頻和中頻不穩(wěn)定性的模型。
Intermediate frequency instability has had the most uneven history . 中頻不穩(wěn)定性的研究經(jīng)歷了極為曲折的道路。
Low or intermediate frequency combustion instability generally involves the interaction of several components of an engine system . 低頻或中頻燃燒不穩(wěn)定性通常包含發(fā)動機系統(tǒng)中幾個組件的相互作用。
Intermediate frequency transformers for broadcast receiver 收音機用中頻變壓器
Intermediate frequency of radio receiver for broadcast 廣播用無線電接收機的中間頻率
Talking about picture intermediate frequency of tv receiver 電視接收機圖像中頻的探討
Intermediate frequency for television receivers 電視接收機用中間頻率
Design and realization of a digital - intermediate frequency receiver 一種數(shù)字中頻接收機的設(shè)計與實現(xiàn)
13 one suit of intermediate frequency power 13中頻電源一套
Intermediate frequency of fm receivers 調(diào)頻接收機中間頻率
In communications and electronic engineering, an intermediate frequency (IF) is a frequency to which a carrier frequency is shifted as an intermediate step in transmission or reception. The intermediate frequency is created by mixing the carrier signal with a local oscillator signal in a process called heterodyning, resulting in a signal at the difference or beat frequency.