isotime meaning in English

等时线

Secondly , combining practical survey method and time - resistance mathematic model , the author obtained average time distance from every time - cell to fictitious time center , isotime curve figure ( by arc view 3d analyze ) and temporal shape
然后利用实际测量法和理论公式法计算出深圳特区各时间单元的平均时间距离，并用arcview中的3d分析模块自动生成等时线图。
Based on the study of the fore going ' s , this thesis regards time - cell , time - center and time - distance as the basic elements of urban time structure . secondly , carry out three constructing principles - - " spatial scale " maps " time distance " , maintain basic spatial structures , extrude main time structures . thirdly , summarize four expressing forms of urban time structure of which isotime curve , isotime circle , time contour and time network
理论探讨部分基于前人的研究成果初步确定时间单元/时间细胞、时间中心/时间基点和时间距离为城市时间结构的基本组成要素；提出时间结构构筑的三原则： “空间尺度”映射“时间距离” 、维持空间关系之基本格局、突出表达主干时间关系；时间结构的表达则从时间结构的形态方面总结出等时线、等时圈、时间廓线图和网络图等表达形式；最后提出城市时间谱概念来评价城市时间结构的优劣。