plane tree

Scan-line based contour tree generation method;

基于扫描线的等高线树生成法

Former contour trees have two defects when describing the topological relations of contour lines on the map.

在分析以往等高线树在表达地形图等高线拓扑空间关系时既没有考虑局部地形特征(鞍部、山头、洼地等)又不能很好表达等高线与所围区域之间的关系等缺陷的基础上,提出了增加地形特征等高线构建增量等高线树,以同时表达等高线之间、等高线与所围区域之间两种拓扑空间关系。

This paper builds the spatial relationship of contour using contour tree, forms the similar Douglas conversion model by means of convex-hull and Douglas arithmetic, and then puts forward a new method of automatically identifying the ridge line and the valley floor line.

通过等高线树构建出各条等高线的空间关系,采用计算几何中的凸壳和Douglas算法,建立了似Douglas变换模型,提出了一种自动识别山脊线和谷底线的新方法。

Field data shows that reasonable distribution of contour shrub belt is of significant soil and water conservation effect with runoff decrease of over 30%, sediment reduction of more than 50%, and it can also increase plant coverage of 15% to 20% on slope farmland and forms shrub network on hill slope,and change the situation of ecological e.

资料表明 ,配置合理的等高灌木带具有较强的保持水土效益 ,其径流削减率在 3 0 %以上 ,泥沙削减率在 5 0 %以上 ,可增加坡耕地植被覆盖度 15 %～2 0 %,在峁坡上能很快形成林网 ,大大改观坡耕地长期植被稀疏、生态环境恶化状况。

The method and its application for contours clustering based on similarity distance and contours’ tree

基于相似距离和等高线树的等高线聚类及其应用

An algorithm, which calculates the contour elevation automatically based on bin tree, is presented too.

同时编制了基于二叉树的等高线高程自动赋值算法。

Broadleaf hedge such as laurel, spirea, photinia, etc.

阔叶树篱，如月桂、绣线菊、 光叶石楠等。

be in line with; form a line along; of trees along a river, etc..

排成一行；形成一条线；关于树沿着河流等等。

Pictured are "address contours", similar to familiar elevation contours.

图中「等门牌线」，类似熟悉之等高线。

The long dimension of the barrel vaults that form the building is parallel to the allees and contours, continuing the layered structure of the outdoor space.

构成建物的长容积桶状圆拱平行于树列及等高线，且接连了外部空间的地层构造。

mark(a map)with contour lines

在（地图）上标出等高线.

terrain contour matching guidance

地形等高线匹配制导

Comparison of height-diameter models for main species in natural forest of Changbai Mountains

长白山天然林不同树种树高曲线对比研究

Optimal height-diameter models for dominant coniferous species in Changbai Mountain,northeastern China

长白山主要针叶树种最优树高曲线研究

A Discussion about Setting the Concept of Advanced Career Educational;

试论我们应该树立的高等职业教育观

Build up the scientific viewpoint of development to promote the higher education;

树立科学发展观,促进高等教育发展

The View of Teaching Quality to Be Established in the "Popular" Higher Education;

“大众化”高等教育应树立的教学质量观

FIVE EDUCATIONAL SENSES HIGHER EDUCATION IN CHINA SHOULD DEVELOP IN THE 21ST CENTURY;

21世纪我国高等教育应树立五种观念

Adopting the Scientific Outlook on the Quality of the Self-taught Higher Education Examinations

树立科学的高等教育自学考试质量观

Those trees are growing so high that they interrupt the view.

那些树长得过高而遮住了视线。

Application of Kernel Density Estimation Theory to Establishment of Tree Height-diameter Curve

核密度估计在构造树高曲线中的应用

Individual Tree Height-diameter Curves of Larch-spruce-fir Forests

落叶松云冷杉林单木树高曲线的研究