离播包装 Off Air

电离层传播 ionosphere propagation

传播距离 propagation length ; distance of spread

距离矢量组播路由协议 DVMRP ; Internet Draft ; Distance Vector Multicast Routing Protocol

电离层散射传播 ionosphere scatter propagation

电离层反射传播 ionosphere reflection propagation

越电离层传播 trans-inospheric propagation

离心式播种机 centrifugal seeder

距离向量组播路由协议 DVMRP ; Distance Vector Multicast Routing Protocol

距离向量多播选路协议 DVMRP ; Distance Vector Multicast Routing Protocol