查询词典 spatial point

Then, the impact of spatial correlation on the combination of spatial diversity and multiuser diversity is investigated.

再次，研究了空间相关对联合空间分集和调度策略的多用户MIMO系统下行链路性能的影响。

By spatial and quantificational simulating the factors and spatial overlapping, the paper evaluated the ecological suitability and sensitivity of Qixia at county level. And, combining the method of landscape pattern optimization, the whole region of Qixia was divided into four zonings: optimizing development areas, key development areas, limit development areas, and prohibit development areas.

6运用GIS技术，通过对各生态因子的空间定量模拟与空间叠加，对栖霞市整个县域的生态敏感性和适宜性进行综合评价，并结合景观格局整体优化的方法，将栖霞市分为优化开发、重点开发、限制开发和禁止开发四类主体功能区。

Exploiting the spatial sparseness, the proposed spatial CS based approach provides a novel framework for the array signal processing.

利用空间稀少，空间政务司司长的建议为基础的方法提供了一个新的阵列信号处理框架。

A new algorithm of 3-D spatial clustering based on mathematical morphology was presented. The process of spatial data mining was given, and an artillery position selection system was realized.

提出了一个基于数学形态学的三维聚类算法，给出了空间数据挖掘过程，实现了炮阵地选取决策支持系统。

Primary Scholar,Spatial Visualization,Spatial Presentation,the Planar Structure,the Cultivating Strategy and Practice

小学生，空间想象力，二维内容结构，空间表象，培养策略与实践

A cell is not just a well-mixed container of chemicals, but an extremely intricate system of membranes, vesicles and signaling pathways. Although a number of milestones have been built though endeavor for over a century, much is still left to discover about the spatial organization and mobility of macro-molecules (such as proteins, protein complexes, nucleic acids, signaling substances, etc.) in cells, and the spatial relationships between cells in tissues.

细胞不仅是大量化学物质的容器，也是膜、泡囊和信号传导通路组成的复杂系统，尽管通过一个多世纪的努力，细胞生物学研究取得了若干重大进展，但是关于细胞内特定高分子(如蛋白质、蛋白质复合体、核酸和信号传导物质等等)的空间组织和运动规律以及组织内细胞空间关系等许多问题的机理目前仍不清楚。

Two of properties of spatial reasoning are spatial relation's uncertainty and computational complexity.

空间推理的不确定性和推理计算的复杂性是地理空间推理的两个基本特点。

There are many influences for relation's uncertainty in spatial reasoning, and the three most important influences are the data uncertainty and acquiring difficulty of relation information and result uncertainty of spatial reasoning.

空间推理问题的不确定性的主要原因是数据的不确定性、关系提取的困难性和推理过程的不确定性，这三种不确定性因素都影响到了地理空间推理中的地图目标空间关系发掘和提取，同时，计算的复杂性也是影响地理空间推理系统应用的一个重要因素。

Using the two-stream fluid model, the linear dispersion relation is derived assuming a two-dimensional spatial geometry. Two cases are considered, one is that the 2D spatial geometry is defined by the plane containing the two counterstreaming electron populations and the perturbation wave vector , and the other is that the geometry is defined by the plane being vertical to the two counterstreaming electron populations .

对高能束流和电子回流构成的双流系统，建立冷等离子体流体模型，采用简正模分析方法，分别考虑扰动波矢在平行于电流传播方向的平面上和在垂直于电流传播方向的平面上这两种情况，推导了不稳定性的色散关系。

To investigate the spatial-dependence of heterogeneity at multiple scales for a community, we selected a representative plot of 100 m×100 m in the mountainous evergreen and deciduous mixed broad-leaved forest in Sichuan, southwest China (102°50'E, 30°02'N).The location of every tree was mapped by compass, and all-scale analysis of spatial structure of forest community was conducted by the method of PCNM (principal coordinates of neighbor matrices).

为了解植物群落在多尺度下的空间变异规律及其对空间尺度的依赖，以川西南山地阔叶混交林为对象，在有代表性的地段设立100m×100m样地，采用传统的罗盘仪对树体的相对空间位置进行定位，运用主轴邻距法(principal coordinates of neighbor matrices， PCNM)对群落空间结构的多尺度（100m内）特征进行了研究。

The statistical analysis of this large set of mutations has led us to propose a diagnostic strategy that should help with the molecular work-up of optic neuropathies.

这一大系列基因突变的统计学分析引导我们提出一个诊断策略，可以帮助我们对视神经病变进行分子学的诊断检查。

The results show that the pipe grouting changes the mechanical parameters of surrounding rocks to achieve the security of engineering objectives by reinforcing surrounding rocks and bolcking the water.

研究表明：小导管注浆一方面改变了围岩的力学参数，另一方面利用浆液的固结特性可以实现堵水和加固围岩的工程目标，使隧道在开挖过程中的安全得到保障。