同时还启用了基本的等高线和隐线消除特性，最终的绘图是利用splot命令使用数学库内部的函数来创建的。
The base contour is enabled along with hidden line removal, and the sinc plot is created with the splot command using the internally available math library functions.
这是一幅由美国地形勘测出来的地形图，基本上，所有海拔等高线在一块陆地上。
So, a topographic map, this one from the US geological survey shows you, basically, all the level curves of an altitude function on a piece of land.
从规则高程格网中自动提取等高线是地理信息系统以及计算机制图的基本功能。
The extraction of contour lines from Grid DEM is a primary function in computer-aided cartography and GIS.
提出了一种基于相邻等高线的TIN建立算法——区域分割构网算法，并阐述了其基本思想。
A new method for TIN generation based on adjacent contours is brought forward, called algorithm of region segmentation. The fundamental thinking is introduced in details.
本文根据分形理论的基本原理，提出了一种基于量化等高线形状结构特征的复杂等高线自动综合的新方法。
According to the fractal theory. a new method of complicated contour automated generalization. which is based on quantizing the features of contour lines shape. is proposed in this paper.
本文简要阐述了等高线植物篱的基本概念、类型及主要科学问题；
This paper discusses some principal issues in the development of the technology.
本文简要阐述了等高线植物篱的基本概念、类型及主要科学问题；
This paper discusses some principal issues in the development of the technology.
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