propagation的解释n.增殖,繁殖,广传propagation的例句Thesunsometimesspoilsthepropagationofradiowaves.太阳有时会影响无线电波的传播。Thesystematicpropagationofadoctr ineorcauseorofinformationreflectingtheviewsandinterestsofthosepeopleadvocatingsuchadoctr ineorcause.宣传活动对一个学说、事业或信息的系统宣传,其反映倡导该学说或该事业的人的观点和利益