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digital radio relay network 数字无线电中继网络
It is very essential to make emphatically a study of chanel fading so as to design reasonably radio systems and develop high capacity digital radio relay systems. 指出加强对微波传输衰落的研究,对于经济合理地进行系统设计、发展我国高速率的数字通信是至关重要的。
radio relay network 无线电接力通信网
There has always been a problem in using radio relay in overseas communications. 在利用无线电转播进行海外通迅方面一直存在着一个问题。
Telegraphic instrument that transmits and receives printed messages and data via telephone cables or radio relay systems. 通过无线电中断系统传送和接收列印资讯和资料的各种电报器械。
Your frame relay network uses DLCI information on each of the PVC's. What is the purpose of them? 你的帧中继网络在每一个PVC连接上使用DLCI信息，这是何意?
PVCs are the underpinnings of today's frame relay networks. pvc是当今帧中继网的基矗
DRM(Digital Radio Mondiale) is a digital audio broadcasting system for the frequency below 30 MHz. 全球范围的数字广播系统DRM(Digital Radio Mondiale),是一种针对30MHz以下频段的数字声音广播系统。
Unlike PVCs,with SVCs,users are able to dynamically allocate the virtual circuit between an arbitrary pair of endpoints on a frame relay network. 利用SVC与利用PVC不一样，用户能在帧中继网中任意一对的端点之间动态分配虚拟电路。
Siemens is proud to present the secure digital radio communication system TETRA (Terrestrial Trunked Radio). 西门子隆重推出安全的数字无线通信系统:TETRA数字集群通信系统.
A new digital radio frequency memory(DRFM) system architecture based on digital channelized receiver is introduced. 提出一种基于数字信道化接收的数字射频存储(DRFM)系统设计方法。
A headquarters with T-1 accessing a frame relay network can communicate securely with remote offices that use 56K and 64K bit/sec connections. 公司总部以T-1线路进入帧中继网，能与使用每秒56K和64K位连接线路的远地办公室进行安全通信。
Unlike PVCs, with SVCs, users are able to dynamically allocate the virtual circuit between an arbitrary pair of endpoints on a frame relay network. 利用SVC与利用PVC不一样，用户能在帧中继网中任意一对的端点之间动态分配虚拟电路。
DRM (Digital Radio Mondiale) is a flexible digital sound broudcasting system for terrestrial broadcasting in bands below 30MHz. 数字调幅广播DRM(Digital Radio Mondiale)系统是1999年世界上几十个国家广播机构联合开发的应用于30MHz以下频段的地面数字声音广播系统。
DLCI Data Link Connection Identifier ( DLCI) is a unique number assigned to a Permanent Virtual Circuit (PVC) end point in a frame relay network. 本策略的目的使为了定义任何外部主机连接到企业网络的标准。这些标准是为了使非授权使用企业资源造成的损害及相应的企业信息暴露最小化。
Digital Radio Broadcasting (DAB) is a broadband, nearly CD quality, digital broadcasting, suit for terresestrial and satellite broadcasting. 数字音频广播DAB(Digital Audio Broadcasting)系统是宽带的接近CD质量的数字广播,适用于地面和卫星广播;
DLCI identifies a particular PVC endpoint within a user's access channel in a frame relay network, and has local significance only to that channel. 损害包括企业机密性数据的丧失，知识产权的侵犯，公众信息的破坏，以及企业内部系统的破坏等。
In the paper,digital radio frequency memory(DRFM) is applied to airborne radio fuze jammer to jam pulse distance-detecting fuze and pulse Doppler fuze. 将数字射频存储器(DRFM)应用到机载无线电引信干扰机中用来对脉冲测距引信和脉冲多普勒引信进行干扰。
Offers loyalty, encouragement and support to other amateurs, local clubs, and the American Radio Relay League, through which Amateur Radio in the United States is represennted nationally and internationally. 他对其他无线电爱好者、地方俱乐部和代表本国的国家协会表现忠诚、鼓励和支持。
In UK, Lobster 700 TV able to receive digital radio stations as well as BBC1, ITV1, E4 and a special channel called Channel 4 Shortcuts. 在英国，龙虾700电视能接收数字广播电台以及bbc1，鼠疫，e4类和特殊频道4频道捷径。