例句與用法

1. The distribution gis data management methods and its application in distribution running are systematically researched , which compose distribution gis network topology analysis ( nta ) and optimal rush - maintain path ( orp ) , and distribution planning , which composes distribution spatial load forecasting ( slf ) : ( 1 ) with systematic analysis on the relationship between spatial data model and spatial data structure , the distribution feature and the two common gis data models are analyzed , which are vector and raster data models . then the conceptual and logic data models of distribution gis are designed . the spatial data storage structure is given by using vector method , and their detailed data management methods are proposed
   （ 4 ）將gis的空間信息分析功能應用于配網空間負荷預測（ saptialloadforecasting ， slf ）的研究：綜合利用灰色理論及遺傳規劃的優點，提出了一種根據饋線的歷史峰值負荷進行外推的組合slf法：首先采用負荷轉移耦合法來修正負荷歷史，消除由于負荷轉移引起的誤差；然后根據實際饋線路徑和配網gis圖形分層，運用圖層疊加分析得到饋線的實際供電范圍；接著采用灰色關聯度聚類方法對饋線負荷增長曲線進行聚類分析；最后采用遺傳規劃來對灰色聚類結果進行符號回歸，分別得到每一類曲線的最佳擬合曲線形式。
2. It also discusses the realization of the system . meanwhile , beginning with the analysis of the need few the system , the thesis draws a data flow diagram , studies the entities and their relation involved in the system and sets up the concept data model . then it establishes a logic data model and opens up the managing system of the automatic storage & retrieval system d atabase supporting the internet structure of the client / database server by using sql server 2000 database system
   同時，從啤酒自動化倉庫管理系統需求分析入手，畫出系統的數據流圖，研究系統所涉及的實體以及實體之間的關系，建立概念數據模型，再建立邏輯數據模型，最后采用sqlserver2000數據庫系統開發了支持客戶機服務器網絡結構的啤酒自動化倉庫管理系統數據庫，為倉儲作業的實現和庫存管理提供數據存儲方面的支持。