We assume that all geometries reside in the column GEOMETRY of a table named SPATIAL_DATA. 我们假设所有几何图形都存储在一个名为SPATIALDATA的表的GEOMETRY列中。
Perform a spatial operation that compares all geometries in the table with a fixed linestring using a simple spatial query. 执行一个空间操作,该操作使用一个简单的空间查询将这个表中所有的几何图形与一个固定的linestring进行比较。
As before, a3D array is used to maintain the current and working geometries. 与之前一样,可以用一个3D数组保存当前的这些几何分布。
The critical aspects of fluvial reservoir geometries and architectural patterns are covered in detail, using worldwide examples. 利用世界各地的范例,详细讨论河成油藏几何图形和构造样式的关键几个方面。
However, first-and second-generation high-temperature superconducting wires based on flat tape geometries have high hysteretic losses. 但是,第一代和第二代高温超导导线几何形状的基础上平磁带具有很高的迟滞损失。
It is shown that there exist two special geometries having low coupling losses. 结果表明存在两种特定的结构使耦合损失最小。
The results show that appropriate combined variable geometries can improve the engine aerodynamic stability greatly. 结果表明,恰当的组合变几何调节可显著的改善发动机的稳定工作范围。
PIPA is able to work with varying materials in different geometries. PIPA可以适用于各类几何形状材料的探伤。
The non-Euclidena geometries were in effect subordinated to Euclidean geometry. 非欧几里德几何实际上是从属于欧几里德几何的。
These variances are defined by the variable geometries and the usable thickness of the casework and walls. 这些变化决定于可变的几何形状和使用厚度个案和墙壁。
Analysis on Wake Geometries and Flapping Responses for Rotor in Tilting Flight 倾转状态的旋翼尾迹形状和挥舞响应分析
Lanthanide ions with flexible coordination geometries are excellent candidates for creating open frameworks by employing suitable space ligands. 稀土离子具有灵活的几何配位构型,在合适空间配体的作用下可以构筑结构多样的开放框架。
The adsorbate geometries are understood in the light of the frontier orbital theory. 构型可以根据前线轨道理论得到理解。
The kit allows the scanning of complex geometrical profiles to get form error of known or unknown geometries. 该扫描系统能够允许扫描复杂的几何轮廓,从而获得已知或未知几何特征的形状误差。
The mathematical transformation is fixed and the airfoil is moved to generate different airfoil geometries. 数学变换是固定机翼的翼型几何移到产生不同。
Semiempirical calculations at the MNDO level were performed on nitroaromatic compounds to obtain fully optimized geometries and electronic structures. 对硝基芳烃类衍生物进行半经验分析轨道MNDO计算,求得全优化几何构型和电子结构。
Numerical simulation is a effective method for solving problems of fluid flow and heat transfer in complex geometries. 数值模拟是解决复杂区域的流动和换热问题的一个行之有效的方法。
More experimental is required to confirm whether this method is applicable geometries, such as evacuated tubular collectors. 更多试验是须确认这种模式是否适用几何结构,例如疏散管状收藏家。
Geometries and Electronic Structures for the Adsorption of Li on Si ( 001) Surface with Different Coverages 不同覆盖度下Li原子在Si(001)表面上的吸附构型和电子结构
The effects of the stability of dye laser on the signal to noise ratio in degenerate four-wave mixing ( DFWM) were first investigated in iodine vapor using forward geometries. 在碘蒸气中研究了染料激光稳定性对简并四波混频(DFWM)信噪比的影响。
At the TD-DFT level, absorptions and phosphorescence properties of the studied molecules were calculated on the basis of the optimized ground-and excited-state geometries, respectively. 在含时密度泛函方法水平上,我们以分子的基态、激发态优化几何为基础分别研究了它们的吸收和磷光性质。
He did not grant independent existence to the noneuclidean geometries. 他不承认非欧几里得几何的独立存在性。
Others may experience complex geometries of light. 有些人也许会体验到复杂的几何光线。
The scheme includes optimizing the recording and reconstruction geometries and collimating the reconstruction wave with a gradient-index lens. 该方案包括优化记录和重现光路,以及采用自聚焦透镜准直重现光波。
Relationships between the minor axis semidiameter and major axis semidiameter have been empirically determined for different structural detail geometries. 椭球长半轴,地球长半轴对于不同结构细节的几何形状,已经确定了短轴和长轴半径之间的关系。
Understand the fundamental depositional framework and resulting reservoir geometries; 理解基本沉积框架和形成的油藏几何图形;
But none of the mathematicians believed that these basic non-Euclidean geometries would be physically significant. 但数学家们无人相信这些基本的非欧几里德几何必然有物理意义。
Detectors ( contd.): Vertical vs. in-plane geometries. Quantum well intersubband photodetectors. 光侦测器()垂直与平面结构。量子井次能带间跃迁型光侦测器。
With nanometer range process geometries, yield is a function of the chip layout as well as the defects from interactions between the chip design and the manufacturing process. 随着纳米级别尺寸的工艺技术进步,产量是评价芯片设计性能以及芯片设计和制造工艺之间相互作用的缺陷参考的一个重要方面。
The classical fundament theorem over a division ring is: thecollineation between two affine geometries is a semi-linear mapping. 经典的体上仿射几何基本定理是:体上两个仿射几何之间的直射是半线性映射。