查询词典 concave polygon

Study on the driving forces of land use/cover temporal-spatial change. On the basis of the systematical study on natural and social-ecomic factors including climate, population, technology and affluence status etc. during the past 50 years in this area, the multivariate statistics simulation models of LUCC were developed for two periods of 1950's-1980's and 1986-2000 respectively. Then, the Thiesson polygon method was used to the spatial allocation of soci-economic factors, thereby the spatial relationship between land use degree change and socieconomic factor variation was detected within GIS. Based on the analysis of the integrative characters in different geographical divisions, the electivity index was employed to describe the possible impacts of the natural landscape structure on spatial differentiation of land use transition. At last, correlation analysis between major roads and the distribution of land use change was made.

分析近50年气候资料和人文因子在不同年代的变化特点，系统地研究了气温和降水等自然因子和人口、农牧业发展、经济状况等人文因子对区域土地利用变化的影响；从时间序列的角度分析了50年代至80年代初和80年代中期至2000年两个时段土地利用／土地覆被变化的驱动因子，在相关分析的基础上，分时段建立了区域土地利用／覆被变化的自然-人文影响统计诊断模型；针对不同经济类型区选择典型县，分析近15年土地利用变化外在人文驱动力的区域相似性和差异性；尝试以THIESSEN多边形方法进行社会经济统计数据的空间化处理，探讨了土地利用程度变化与人文因素变化的空间相关关系；以优先指数模型和土地利用类型转化率与距交通干线距离的相关模型分析了景观自然与人文结构对土地利用空间转化过程的影响。

This isn't racing, but a torturous exercise in learning to keep a floaty polygon block (referred to in the game as a "car") on a flat and blurry texture map long enough to reach the first curve.

这不是比赛，而是一个艰苦的工作学习，以保持floaty多边形块（中所提到的游戏为&车&）的一个单位和模糊的纹理映射足够长的时间，达到第一个曲线。

Some example results show that it is consistent with current formular.So it not only provides an index for assessing the accuracy of line and polygon but also give a formular which can determine the size of confidence...

这不仅为GIS中线、面的精度评定提供了一个指标，而且为任意p维随机向量在不同置信度下、置信区间大小的确定提供了一个通用公式

Cells with abundant processes are in the shape of ellipse, fusiform, polygon and triangle.

非洲鸵鸟是目前世界上现存鸟类中最大的一种。

Cells were polygon and round ellipse in bulk, and only a small part were fusiform.

共同培养11天后，大部分细胞呈多边形、圆形、椭圆形，少量细胞呈梭形。

The largest diameter of the tumor was 10 centimeters. By light microscopy the tumor was composed of two parts. Main part consisted of small round or polygon tumor cells with an island or nestlike arrangement of organic structure. The other showed moderately differentiated characteristics.

光镜下肿瘤由两部分组成，大部分由大小一致的圆形、多角形小细胞组成，细胞排列成岛状、巢状等器官样结构；另一部分呈中分化腺癌形态特点。

Joining two nonadjacent vertices of a polygon.

对角线的：连接多边形任意两个不相邻顶点的直线的

They include cerebellum,cerebral cortex,hypothalamus, mesencephalon, and pons.A few of positive cells could be seen in the medulla oblongata. NADPH-d positive neurons appears blue.Their shapes were diversform such as polygon,fusiform,nummular and oval etc. Karyon hasn't pigmentation. Dendriate and axon's pigmentation are clear.

实验一利用NADPH-d酶组织化学技术，对NOS阳性神经元在兔脑的总体分布规律及其衰老性变化进行了系统研究，结果表明：①NADPH-d阳性神经元分布于兔脑各个部位，几乎涉及所有区域：包括小脑、大脑皮质、丘脑下部、中脑、脑桥和小脑，而延髓分布较少。

The method was applied to extract gravity and magnetic data in some carbonate area; then Parker Oldenburg method was used in every polygon to inverse base depth of every unit t finally the basement interface of the whole area was obtained through splicing.

应用该方法，对某碳酸盐岩地区的重磁数据进行了多边形分区提取；然后在每个多边形内应用Parker-Oldenburg法反演出各单元的基底深度；最后通过拼接，获得了丰富个区域的基底界面。

The 28 pollen types of Polygonaceae in China have been arranged in their evolutionary sequence. Evolutionary trends of pollen types of Polygon...

该项研究不仅为化石花粉的研究提供了鉴定依据，而且为中国蓼科孢粉地理学的研究提供了理论基础。

So it was last week in Selma , alabama.

上星期在亚拉巴马州塞尔马市发生的事件也是这样一个转折点。

The group also spearheads various social programs in China.

该组织还带头参与中国的各种社会活动。