| 1. | To zoom in and out , press , or press then drag . map scale ranges from 1 : 2 , 000 to 1 : 550 , 000
按下,或按下后拉动可随意放大或缩小地图,地图比例由1比2 , 000至: 550 , 000 。
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| 2. | Given the consideration of mapping scale and availability of spatial attribute data , the methodology for the production of lut and lup will focus on utilisation of space - borne remote sensing technology
在考虑制图比例尺和可获取的空间及属性资料的前提下，制订土地利用表和绘制土地利用图的方法著重于航天遥感技术的应用。
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| 3. | Inferring from the corresponding map scale , the total area of the three ringed mountains are about 1000 square kilometers , the average area of each ringed mountain is similar to 327 . 5 square kilometers , the total area of shenzhen special economic zone
根据有关地图比例尺推算，三个环形山的总面积约1000平方公里，每个环形山平均占地面积与深圳经济特区（一线）总面积327 . 5平方公里较接近。
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| 4. | The major considerations in proposing this scheme include the purpose of the classification , mapping scale , source of data , technological approach in producing the landuse plan , size of the study area and compatibility with previous work and national landuse standards
提出这一方案时考虑了多种因素，包括分类目的、绘图比例尺、资料来源、绘制土地利用图的技术途径、研究范围规模、以及与以前工作成果和国家标准的相容性。
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| 5. | Based on the theory of the extended fractal dimension , this paper studied the attenuation level of self - similarity of various map objects with the variety of the map scale , and researched further the relationship between the scale level factor of map features and fractal attenuation
以扩展分维作为理论基础，从变维分析的角度出发，研究地图目标的自相似程度随比例尺变化而衰减的规律，进一步研究地图目标的尺度指标与分形衰减之间的关系。
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| 6. | The main subjects of this paper are as follows : ( 1 ) the conditions of map use , characters of map regions and map scale are considered during map generalization . we also build several tools to dynamic sum up and pack up generalization rules and parameters and put them to generalization knowledge library
考虑了影响制图综合的三要素，即地图用途、制图区域地理特点和地图比例尺，并实现了对综合规则、参数的归纳和整理，建成了可动态扩展的规则库和参数库。
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| 7. | In this paper , we apply the theory of " nature objects existed being excellent and washed out being of feebleness " to automated map generalization basing on thinking of the conditions of map use , characters of map regions and map scale . two generalization models which are called " constrained delaunay triangle net generalization model ( cdtngm ) " and " circle generalization model ( cgm ) " are created
本文在考虑了地图用途、制图区域地理特点和地图比例尺等因素的基础上，把“优胜劣汰”的思想运用到了地图自动综合中来，并实现了“约束delaunay三角网综合模型”和“ circle综合模型”两个算法模型。
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| 8. | The methods for solving these problems are put forword as follows : the method of airphoto scale rangs from 1 / 4 to 1 / 6 of map scale ; a flight line uses belt method ; the optional time intervals of airphoto taking are from may to june and from august to october in one year ; when the contrast at the site is small , or the visibility is rather low and needs to enchance the contrast , the hardening agent should be prepared to process the film
并提出了解决问题的方法：山区航空摄影合理的摄影比例尺应是成图比例尺的1 / 4 ~ 1 / 6 ；对于山区窄而长，且为线状走势的河流宜采用带状航线设计方法设计；山区流域水分充足能见度不好，惟每年5 - 6月和8 - 10月是航空摄影的最佳季节；当地面物体反差小或能见度不好而需要特别提高反差时应配制较硬性药水冲洗等。
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| 9. | The basic concept of terrain information content is proposed after an overall review of existing research achievement . applying a series of analysis and data processing method , like math - analysis , mathematical statistics , comparative , error visualizing , this paper carefully investigated the terrain information content characteristic of dems of 1 : 50000 map scale of loess plateau area
本文在对前人已有研究成果进行系统总结的基础上，首先明确了dem地形信息容量的基本概念，并运用数学分析、数理统计、比较分析、误差地图等方法，以海拔高程与等高线为研究对象，以1 ： 1万比例尺dem为参考真值，探讨了黄土丘陵沟壑区1 ： 5万dem的地形信息容量特征。
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| 10. | Experiment results show : ? he theory and method of information content could play an important role in the case study on the accuracy and application of dem . ( 2 ) in the loess plateau area , there are much difference between 5m resolution dems of 1 : 10000 map scale and 25m resolution dems of 1 : 50000 map scale while gathering terrain characteristic information , and yet the spatial structure of dem error have discipline and measurability on statistics . ( ? the results could offer fundamentals and methods to people on their work to research the terrain information content of dems with different scale level
研究结果显示： 1 、地形信息容量的理论与方法对于dem精度与应用适宜性的研究具有重要的作用； 2 、在黄土丘陵沟壑区，同1 ： 1万比例尺5米分辨率的dem相比， 1 ： 5万比例尺25米分辨率dem在提取地形特征方面具有较大的差异，但误差的量值与空间分布具有统计上的规律性与可估算性； 3 、以上研究结果可望为其它各级比例尺dem地形信息容量的研究提供新的理论基础与技术方法，也可为有关规范、标准的制定提供依据。
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