短語(yǔ)詞組短語(yǔ)propagation delay time [通信]傳播延遲時(shí)間;傳輸延遲時(shí)間;傳播延時(shí)間;翻譯tpt propagation delay time 傳播延時(shí)Propagation time -delay of ground-wave 地波傳播時(shí)延Propagation Delay Time HIGH -to-LOW Level 傳播延遲高到低Propagation Delay Time LOW -to-HIGH Level 傳播延遲低到高Time and propagation delay 時(shí)間與傳播延遲 返回 propagation time delay