major research item 中文意思是什麼
major research item
解釋
重大科研項目-
This task is an important part of a major technical item undertaken by science commission in harbin city which centered around the applied research on the technique of percolation irrigation with zippered plastic buried pipe
本課題是哈爾濱市科委重大科技攻關項目《棚室蔬菜塑料拉鏈暗管滲灌技術的應用研究》的重要組成內容。 -
Based on the characteristic of the pavement serviced, the traffic and the maintenance management of the major highwaays in zheng - zhou city, this paper makes up the theony and mothed for pavement service performance makes a systemly analysis and research of item queuing and decision potimum, and puts forward to the way to the pavement maintenance of the major highways with the system analysis theory, the modern information technique and much scientific knowledge on system science, management science, project economy, highway engineering, computer technique and son on, which meet he need of the macromanagement and the major management on the highway maintenance through the theoretical analysis, the maintenance management, the qualitative analysis and the quantitative analysis. after practically used, we have a better conclusion
本文依據鄭州市干線公路路面使用性能現狀特徵、交通特徵、養護管理特徵，以系統分析原理為指導，現代信息技術為手段，綜合運作系統科學，管理科學、工程經濟、道路工程、計算機技術等多種科學知識，對項目排序和決策優化方法進行了較為系統的分析與研究，面對道路養護宏觀管理與重點管理的要求，通過理論分析與養護管理實際相結合，定性分析與定量分析相結合，建立了路面使用性能評價的理論方法，提出了干線公路路面養護技術對策，經過實際推廣應用，取得了較好的效果。
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