两周前阿曼航空宣布，推出针对空中乘客的手机和宽带上网服务。在此之前没有航空公司发布过这项组合服务。
Two weeks ago the airline announced the launch of mobile services and broadband Internet access for in-flight users - a combination which has yet to be launched on any other carrier.
空间光学联网技术计划将为下一代超宽带宽、多信道空中与太空通信网络开发基础技术。
Finally, the space Optical Networking technology project develops the technology base for the next generation of ultra-wide-bandwidth, multi-channeled, air and space-based communications networks.
文章简介了宽带无线接入系统，着重对美国IEEE标准802.16.1系统进行了介绍，给出其系统模型及其空中接口MAC、PHY层协议内容。
This article briefs the broad-band wireless access system, and systematically details the IEEE standard 802.16.1by giving its system model, air interface proto-cols of MAC and PHY layer.
超宽带电磁场在真空中和空气中的慢衰减规律前人已作过许多工作，也有比较系统的理论。
There are many systemic theories on decaying law of UWB electromagnetic field in vacuum and air.
超宽带电磁场在真空中和空气中的慢衰减规律前人已作过许多工作，也有比较系统的理论。
There are many systemic theories on decaying law of UWB electromagnetic field in vacuum and air.
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