key areas and zones 中文意思是什麼
key areas and zones
解釋
重點區域、重點地帶-
A number of circular economy pilot projects will be conducted in key industries, industrial zones, and urban and rural areas
在重點行業、產業園區、城市和農村實施一批循環經濟試點。 -
Applying the geographic information systems ( gis ) technology on the basis of data gathering in the fields, the present paper has made an analysis and evaluation over the situation of electromagnetic radiation, over the principal areas, including key residential blocks, protection zones of the historical relics, scenic spots and, particularly, the olympic venue district of the city
在野外數據採集的基礎上，運用地理信息系統（ gis ）技術，對北京市重點地區（重點居民區、文物保護區、風景旅遊區、奧運場館區）環境的電磁輻射水平進行了分析與評價。 -
The present utilization and existing problems in water resource of the north of huaihe river in anhui are introduced. based on such research objects as northern guo river of bozhou, jiangtang of fuyang and key city zones, a mathematical model with systems engineering viewpoint is established and used to investigate in water resource problems in the area. the main contents are as following : ( 1 ) groundwater resource and present utilization ; ( 2 ) mensuration of calculational parameters of groundwater and calculational methods ; ( 3 ) economic parameters of irrigation areas ; ( 4 ) establishing northern wo river forecast model with finite element method, areal well - group method and water balance method ; ( 5 ) establishing optimal water resource allocating model for northern jiangtang and new cihuaixin river irrigation area and investigating in the combination of surface water and groundwater, optimal agricultural planting - mode and optimal distribution proportion of various water sources ; ( 6 ) some existing exploitation problems and advices about water resource in the area
本論文針對淮北地區水資源開發利用現狀及存在問題，以安徽亳州渦河以北地區、阜陽姜堂鄉和重點城市區為研究對象，運用系統工程觀點，採用數學模型方法，對該區水資源問題進行了綜合研究，主要內容為： （ 1 ）地下水資源及開發利用現狀； （ 2 ）地下水計算參數測定和計算方法； （ 3 ）灌區經濟參數； （ 4 ）採用有限單元法、面狀井系法、水均衡法，建立亳州渦河以北地下水位預測模型； （ 5 ）建立阜陽姜堂及茨淮新河北部的農灌區水資源優化配置模型，應用系統分析的方法，研究地表水與地下水聯合運用，農業最優種植模式及各種水源的最佳分配比例； （ 6 ）淮北地區水資源開發利用存在問題及建議。 -
Cities, economic development zones, industrial and mining areas and important state agricultural production bases under the threat of floodwater should be protected as key areas and necessary flood control works constructed
受洪水威脅的城市、經濟開發區、工礦區和國家重要的農業生產基地等，應當重點保護，建設必要的防洪工程設施。
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