free-space transmission
英 [friː speɪs trænzˈmɪʃn]
美 [friː speɪs trænzˈmɪʃn]
网络 自由空间传播
双语例句
- Development of free-space optical communication system based on internet transmission
电接口以太网传输大气激光通信系统的研制 - For free-space quantum key distribution system and especially the long range link, the transmission medium for the signal is the atmosphere, which is always in a movement.
对于空间量子密钥分配系统，其信号的传输媒质是时刻处于运动变化状态的大气。