propagationl传播propagationn.增殖；繁殖；传播；传送propagation by tissue culture组培繁殖propagation - circle method传播圆方法Propagation Technical Research繁殖技术研究propagation of characteristics特征传递propagation beyond the horizon视距外传播propagation time and amplitude传播时间和振幅propagation of the sports match体育赛事传播Propagation Delay and Delay Skew传导延迟及延迟纽斜propagation beyond horizon range超直视距离传播propagation model for macro cell宏蜂窝传播模型