线状地物,linear feature
1)linear feature线状地物
1.A method to extract the skeleton of the linear feature based on the voronoi diagram;基于Voronoi图提取线状地物骨架的一种方法
2.Through studying some fundamental properties of the curved surface in differential geometry , a method of linear feature extraction based on differential geometry is introduced.通过研究微分几何理论中曲面的一些基本性质,本文介绍了一种基于微分几何的线状地物提取方法,首先在局部区域内拟合一个二次曲面函数,然后通过该函数来估算灰度曲面的梯度和曲率,设定合适的梯度和曲率阈值来检测线状地物,最后进行后处理,消除许多噪声颗粒及小块区域。
英文短句/例句

1.The Linear Terrain Examination Method Based on the MapGis基于MapGis的线状地物一致性检查方法
2.TECHNOLOGY OF LINEAR-OBJECT AREA SUBTRACTION IN LAND RESOURCES DATABASE;土地资源数据库中线状地物面积扣除技术研究
3.Spatial Data Orgnization of Multi-scale Linear Objects Based on Features;基于要素的多比例尺线状地物空间数据组织
4.Realization of an integrated automatic algorithms of linear features elements based on fractal theory基于分形理论的线状地物要素自动综合算法实现
5.The Research of the Shape of Objects Based on the Geodesic Active Contour Model基于测地线主动轮廓模型物体形状的研究
6.linear reactant线型反应物,链状反应物
7.perennial marsh plants with creeping rootstocks and long linear leaves.沼泽地的多年生植物具有匍匐的根状茎和长线性叶。
8.Determination of Vertical Profiles of Reflectivity for Estimation of Stratiform Cloud Precipitation in Ground Clutter Areas利用雷达回波垂直廓线估测地物阻挡区域层状云降水的技术研究
9.The mountains indent the horizon.山峦使地平线成锯齿状。
10." Bobbin: Elongated spool of thread, used in the textile industry."线轴:加长的缠线筒状物,用于纺织业。
11.common North American weed with linear leaves and small discoid heads of yellowish flowers; widely naturalized throughout temperate regions; sometimes placed in genus Erigeron.北美洲常见杂草,有线形叶子和圆盘状黄花头状花序;温带地区广泛引入;常归为飞蓬属植物。
12.A Monitoring and Warning System for Transmission Network Maintenance and Grounding Line Working Conditions线路检修及接地线状态监视预警系统
13.Of or having the form of a parabola or paraboloid.抛物线或抛物面的或有其形状的
14.Something resembling a wire, as in slenderness or stiffness.金属线状物如在细或坚韧方面象金属线的东西,金属丝状物
15.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。
16.A resinous mixture used by shoemakers to rub on thread.鞋线蜡鞋匠抹在鞋线上的树指状混合物
17.The characteristic surface configuration of a thing; an outline or a contour.形状某一事物的特征性表面形状;轮廓或周线
18.A slender, elongated, threadlike object or structure.纤维一种细长的线状物体或组织
相关短句/例句

linear objects and structures线状地物和结构
3)Tracing of land forms线状地物跟踪
4)Liner detection线状地物检测
5)greening technology mode of align feature线状地物绿化技术模式
6)Line land capability线状地类
延伸阅读

芳香族线状共轭系导电高分子分子式:CAS号:性质:指以芳香族环烃为结构单元,单元之间相互共轭的线型聚合物,是最常见的结构型导电高分子的重要一员。如非杂环的聚苯、聚苯乙炔、聚苯胺等,含有芳杂环的聚吡咯、聚噻吩等。在结构方面考虑,其导电性能与下列因素有关:(1)参与聚合的芳香环具有较高的电荷密度对提高导电性能有利,比如在环上连接给电子取代基;(2)其次是芳香环之间需要直接连接,或者通过双键,以及具有孤对电子的杂原子,如三价氮、二价氧,连接各芳香环,以保证共轭体系的延续;(3)各芳香环之间能够保持共平面,对提高电导率有利,因为可以使π电子充分重叠。如芳香环直接以平面性良好的碳碳双键连接;(4)分子具有能够进行最高密度堆积的构型对提高导电性能有利。因为分子间的电子转移将变得容易。芳香族线状共轭系导电高分子也可以利用掺杂反应提高其导电能力,芳香族线状共轭系导电高分子除用化学方法制备以外,还用电化学氧化聚合方法制备,多数单环或多环芳香烃、五元氧、氮、硫杂环和衍生物都能作为电化学氧化聚合的单体,这是直接利用电极电势作为引发和反应的驱动力,直接在电极表面生成导电性聚合物膜的一种方法,掺杂过程(一般为p-型掺杂)在聚合的同时由电极完成。