... narrow band secure voice 窄带保密话音 narrow band service 窄带业务 narrow band signal 窄频带信号 ...
基于8个网页-相关网页
narrow band personal communication service 窄带个人通信业务 ; 窄带个别通信交易
To understand the real demands and potential market in China for narrow-band ISDN, a meticulous research has been made into the ISDN service requirements in Beijing, Shanghai and Guangzhou.
为了解我国对窄带ISDN业务的近期实际需求和潜在市场，有关部门在京、沪、穗三城市对ISDN业务做了缜密的调查研究。
But the existing network content service supplier provides applications and content services based on narrow band mostly, such as receiving and dispatching mail and static page service.
而现有的网络内容服务商提供的大多数都是基于窄带的收发邮件、静态页面等应用和内容的服务。
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