polar circle meaning in English
北圈
极圈
极圆
Examples
- Are there any animals in the polar circles
南极圈和北极圈内有动物存在吗？ - In the long run , this association has been a fruitful one as jj ' s modest " lip ruin " took him from south africa to the polar circle , from havana to shanghai , from the mississippi delta to the paris opera
十年的光景，米尔多凭着“受伤的嘴唇” 、从北极圈走到南非，从上海走到哈瓦那，甚至走到了巴黎歌剧院的舞台。 - Metropolitan circle is the result of industrialization and urbanization , which is the embodiment of centralization and radialization when the metropolis is developing to a certainty , in order to advance the space and economy to conform , to form a corporate area , fabricating the new type of metropolitan circle in which the metropolis is the core is new topic for discussion of innovative space structure of the big ciry this paper combine the theory expatiation and demonstration analysis with comprehensive and new statistics data , and theory model , and discusses the all - around regional development in chengdu area from a new angle , ie : using space structure model of metropolitan circle to develop the overall enhancement of strength in chengdu first , the thesis defmitudes the concept , connotation , and character of metropolitan circle , after that , it discusses the formative mechanism of metropolitan circle from the factors such as market , institution and ect moreover , from the practice of metropolitan circle ' s development in ho me and abroad , it summarizes the significance of the metropolitan circle form for the economic and social development , as well as the experience for reference and the problems we should pay attention to = based on these theories and practice , it brings forward the necessity and strategic significance of building metropolitan circle in chengdu , and analysis its possibilities , it also makes a research on the model of this circle , it innovatively brings forth that the double - polar circle structure of central city - sub central city - satellite town should be builded , through the establishment of index system , the sphere of metropolis circle in chengdu can be set which means the central city , sub center city and satellite town are sett it also analysis how to determine the gravity between center city and circumjacent area , and discusses the function orientation of center city and satellite town at last , it briefly analyses the transportation designing of suburb and city which are imperative for constructing the metropolitan circle in chengdu
本文将理论阐述和经验实证分析与较全面的最新统计资料，以及理论分析模型分析结合起来，从新的角度深入探讨成都的区域整体发展，即以都市圈的空间结构模式促进成都整体实力的全面提高。本论文首先明确了都市圈的概念、内涵及特征，从市场、等因素探讨了都市圈的形成机理，并从国内外都市圈的发展实践中，总结出都市圈这种空间形式所引起的经济和社会发展的意义所在，以及我们值得借鉴的经验和需要注意的问题。在此理论和实践基础上，提出构建成都都市圈的必要性及战略意义，分析其可能性；并且对如何构建成都都市圈模式进行了探讨，主要是创新性提出构建中心城市-副中心城市-卫星城镇的双极圈域结构，并通过指标体系的建立以确定成都都市圈的范围，即中心城市、副中心城市和卫星城镇的确定，以及测定中心城市与周边地区的引力大小，以及对中心城市和卫星城镇的功能定位进行了探讨。