地名与地图至关密切,地图是反映各类地名分布,表示地名所指代地理实体位置及相互关系的最简明、最直接的载体。以往的地图制作一般都有测绘等专业部门来制作。随着办公条件的改善,地名办公室都配备了电脑等设备,这给地图制作提供了条件,根据我们近年来的经验,概说地图的制作方法。一、基本配置
本文研究了球面和射影平面上对偶无环不可分近三角剖分带根地图的以根面次和内面数为参数的计数问题,得到了这类地图在球面和射影平面上的计数函数满足的方程.还得到了射影平面上2连通地图一个参数的显示表达式和渐近估计式.
收起车上那泛黄的老旧地图吧, GPS的诱惑早已悄悄蔓延开来。只要经由那些人间星辰的指引, 我就能有将未来方向掌握在手中的幸福感。已走过的痕迹,正想去的地方, 在点选之间也能瞬间附着,成为我掌上的标定点。它们彼此串连,脉络交织, 不论是白天或是夜晚, 在地表上绘制出专属于我的航线图, 散布在多野小路与都市丛林间。
This paper considers the processes of activation in ground subsidence movements in flooding mine workings of mines being liquidated in two districts in Donetsk city on the area of more than 60km~2. A
Approximate linear methods and nonlinear methods were adopted usually for solving models of nonlinear surveying and mapping parameters adjustment. But, these iterative algorithms need to compare harsh
By using observed CHAMP orbit ephemeredes and MSISE90 dry air model and regarding the earth as a sphere and an ellipsoid respectively, phase delays are simulated and the simulated data are retrieved u