The cellular digital packet data (CDPD) is a system which borrows idle radio channels from the existing cellular mobile telephone networks for packet data transmission.
蜂窝数字分组数据(CDPD)是利用现有的模拟蜂窝电话网来传输数据的一种新技术。
The E-TDMA-based GMH2000 fixed radio system developed by Hughes Network Systems (HNS) provides an effective local radio loop solution for the public telephone service.
休斯网络系统公司(HNS)的GMH2000固定无线系统是一个基于E - TDMA的系统，它为公用电话业务提供了最有效的无线本地环路的解决方案。
The progress on the study of radio frequency radiation from mobile telephone influence on the central nervous system and the study matter and resolvent are discussed in the article.
本文综述了近年来有关射频辐射对中枢神经系统影响的研究结果，并指出目前研究存在的问题及将来可能的研究方向。
The progress on the study of radio frequency radiation from mobile telephone influence on the central nervous system and the study matter and resolvent are discussed in the article.
本文综述了近年来有关射频辐射对中枢神经系统影响的研究结果，并指出目前研究存在的问题及将来可能的研究方向。
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