亚洲国产成人精品久久久国产_欧美日韩国产成人高清视频久久国产福利免费_国产又爽又黄无码无遮挡在线_丰满的邻居hd高清中文字幕_中国肥胖老太牲交_MD0112私人麻将馆艾秋_国产毛片粗话对白_菠萝蜜一区无限观看_中文字幕伊人无码久热_婷婷五月色综合色

通信手段：communication means

被叫人：called person

緊急通信：urgent communications

移動電話網(wǎng)：mobile telephone network

電話交換臺：telephone switchboard

尋呼業(yè)務(wù)：paging service

電子電路：electronic circuitry

無線傳輸：wireless transmission

無線發(fā)射機(jī)：wireless transmitter

個人代碼：personal codes

服務(wù)區(qū)：service area

單向通信：one-way communication

尋呼用戶：paging users

顧客：customer

技術(shù)進(jìn)步：technological progress

系統(tǒng)的效率：efficiency of the system

專用的無線網(wǎng)絡(luò)：dedicated wireless network

終端設(shè)備：terminal equipment

全球覆蓋：global coverage

無線增益：gain of the antenna

空間站：space station

通信網(wǎng)絡(luò)的運(yùn)行：the operation of a communication network

有線的和移動的電話網(wǎng)絡(luò)：the wired and mobile telephone network

光和聲音的信號裝置：optical and acoustical signaling devices

本地電話交換臺的接線員：the operator of a local telephone switchboard

第一代尋呼系統(tǒng)：the first generation of paging system

利用無線傳輸?shù)膶ず粝到y(tǒng)：the paging system using wireless transmission

專用的無線接收機(jī)：the dedicated radio receiver

社會和經(jīng)濟(jì)效益：social and economic advantages

電子電路的小型化：the miniaturization of electronic circuitry

價格效率比：cost efficiency

小型無線電接收機(jī)：the miniature radio receiver

顯示能力：display capability

全球覆蓋：global coverage

空間站的天線增益：the space station antenna gain

地球同步軌道衛(wèi)星：geostationary orbit satellite

用戶終端：user terminal