main fixed station 中文意思是什麼
main fixed station
解釋
主固定站-
Media gatewaytdmatm integrated access equipment is the main way of narrow band and data private line access. users may access fixed telephone network and dial - up access braodband man through twisted cable ; users may access broadband data network through adsl or ddn, or fr, etc ; mobile comminication users may access 2g or 3g mobile communication network through base station equipment and wireless gateway
媒體網關tdmatm綜合接入設備主要是窄帶和數據專線接入方式,用戶通過雙絞線可以接入固定電話網以及撥號接入寬帶ip城域網;用戶通過adsl或ddn 、 fr等可接入寬帶基礎數據網;移動通信用戶通過基站設備和無線網關可接入第二代或第三代移動通信網。 -
To counter the above mentioned problems, this thesis is based on the practical situation of pump station operation to analyse its operation cost. the operation cost of pump stations consists of fixed and variable parts. to find the fixed and variable cost, the idea of investment allotment method ( iam ) is introduced to obtain the depreciation cost which is the main part of fixed cost
本論文針對上述兩方面問題,從我國大型泵站實際情況出發,對具有雙重功能? ?供水(含灌溉) 、排澇功能的泵站進行成本分析,提出投資分攤方法來解決固定成本中的固定資產折舊費問題,而用優化調度手段來推求泵站運行成本中的變動成本核心? ?抽水耗電費用。
分享友人