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circuit data services中文什么意思
例句與用法
- those communication methods used have advantages and disadvantages in those aspects, such as communication quality, adaptation condition, covering scope, geography environment, construction and working cost, real time quality, etc . in order to make the transport of hydrological information better, this dissertation introduced gsm communication methods in the hydrology telemetric system, using gprs cell-phone, by those mobile communication methods, such as gsm sms, gprs sms, gprs data service, circuit data service, tone channel, etc . this dissertation summarized the constitute of hydrology telemetric system, mobile communication methods, and compared them with those traditional methods
現(xiàn)有的水情遙測(cè)通信方式有多種類型，它們?cè)谕ㄐ刨|(zhì)量、適應(yīng)條件、覆蓋范圍、地理環(huán)境、建設(shè)成本及運(yùn)行費(fèi)用、實(shí)時(shí)性等方面各有優(yōu)缺點(diǎn)。為了更好地進(jìn)行水情信息傳輸，本文提出一種基于gsm通信方式的水情遙測(cè)系統(tǒng)，通過使用gprs蜂窩電話，采用gsm短消息、gprs短消息、gprs數(shù)據(jù)業(yè)務(wù)、電路型數(shù)據(jù)業(yè)務(wù)和語音通道等多種移動(dòng)通信方式，為水情數(shù)據(jù)的傳輸提供了新的解決途徑。