查询词典 planar developable surface

From the point of view of eliminating angular dispersion, the planar tilt errors and groove parallelism can ompensate each other, and the groove-width difference and planar errors of tip can also compensate each other.

标 签 光学器件拼接光栅压缩器时域特性脉冲展宽偏差补偿 optical devices tiled grating compressor temporal property pulse-broadening alignment errors compensation

Visual variables appeared with the basic theory of planar map symbol system,it is also a key basic theory in planar map design.

视觉变量作为图形符号设计的理论基础，在平面地图的符号设计中起着重要的作用[1 ] 。

With replacing the chain by equivalent sphere,a cluster is simplified to a planar array,and this planar array is simplified to a chain,then the dipole moment is obtained.

在这一过程中，通过不断增加等效球的尺寸，将颗粒间的相互作用包含在簇的偶极矩中。

An image conic can be the projection of either a planar conic or silhouette of a conicoid. We show that at least three images, taken from the same position with different camera orientations, of two planar conics, or two conicoids, or one conic and one conicoid, are needed for the calibration, and a closed-form solution can be obtained. Our new conic based calibration technique requires no knowledge of camera's orientations, and relies solely on image correspondences.

在不同的方位拍摄三幅或三幅以上图像，每幅图像至少包含两个空间平面二次曲线、或两个二次曲面、或一个平面二次曲线与一个二次曲面的投影，利用图像之间的二次曲线对应关系，可以确定摄像机的内参数矩阵，同时可以获得摄像机不同方位之间的旋转矩阵。

It indicates that the N—O bonds in the singlet dimer adsorption configurations are weaker than any other structures, and this is propitious to the NO direct decomposition. 7. Unlike NO molecules interaction with copper atoms, when two NO molecules interact with the adjacent silver atoms, the non-planar structures are more stable than the planar.

同时，单重态的二聚体与相邻的金属铜和银原子作用时，由于电子从金属原子转移到二聚体上的数量最多，因此在这种吸附构型中，金属原子被离子化的倾向最大，同时使得二聚体中N—O键被削弱的程度也最大，有利于NO的直接分解； 7。

Then we prove the one-to-one corresponding relation between 3-coloring of inducing four regular graph and 4-coloring of maximal planar graph and find out the relation between three colors of inducing four regular graph and three dual bi-chromatic subgraph of maximal planar graph.

本文给出了极大平面图的导出四正则图的两种构造方式、等价性及性质，证明了导出四正则图的三着色与原极大平面图四着色的一一对应关系，并且找出了导出四正则图的三种颜色与原极大平面图四着色的三组对偶二色子图之间的关系。

Methods: TOCA was labeled with (superscript 99m)Tc using HYNIC as bifunctional chelator, EDDA and trieine as coligand. The nude mice bearing human small cell lung cancer underwent static whole body planar imaging after the injection of (superscript 99m)Tc-HYNIC-TOCA or (superscript 99m)Tc-P829. ROIs were drawn and the radioactivity ratios of target to non-target were calculated in every planar imaging. The dynamic biodistribution study was operated in Kunming mice and the percent uptake ratios of two imaging agents in different tissue at different time were measured.

以HYNIC为双功能螯合剂(bifunctional chelator， BFC)，乙二胺－N，N'-二乙酸和三甲基甘氨酸为协同配体进行TO-CA的(上标 99m)Tc标记；以(上标 99m)Tc-HYNIC-TOCA和(上标 99m)Tc-P829为显像剂，对荷人类小细胞肺癌裸鼠进行显像，通过感兴趣区技术进行半定量分析，计算并比较两种显像剂的靶/非靶比值；在昆明鼠体内进行动态生物学分布实验，测定并比较不同时点两种显像剂在各脏器的克组织百分摄取率。

Under the guidance of the principle and method of seismic sedimentology, we analyze the planar facies map with seismic information based on single-well facies, fetch the information of isochronal stratum unit with the technology of stratal slicing, and research on the planar facies distribution and the evolution history of different stratum unit using various seismic attributes.

以地震沉积学的原理及方法为指导，以单井相分析为基础，将地震高阶信息应用于沉积相平面分析；利用地层切片技术在地震数据体中提取等时地层单元信息，结合各种地震属性参数的分布研究不同地层单元的沉积相分布及其演化史。

This paper gives a mathematical definition to that two open planar curves have the same shape based on curvature representation, therefore, a new kind of shape distance is proposed. It is concluded that the problem of computing the shape distance between two open planar curves can be changed to the problem of a functional extremum, and the differential equation is given, which can be used to figure out the shape distance.

本文为基于曲率表示的两条平面开曲线的等形下了严格的数学定义，从而找到了一种新的形状距离度量，并且证明了这种形状距离的计算问题可以转化为一个泛函的极值问题，同时给出了求解形状距离的微分方程。

Objective: To study the distribution of dose rate on cultured cell plane delivered by 125I seed planar irradiation, and to establish a reference table on dose rate of 125 I seed planar irradiator for cell lines in vitro.

研究内容分以下五部分：第一部分 125I 籽源体外照射细胞的剂量分布研究目的研究 I 籽源体外照射的细胞平面剂量分布，建立 I 籽源体外照射 125 125 细胞剂量率参考模式表。

Fostering the concept of multi-culture firmly and mastering the development of advanced culture correctly are conductive to resisting terrorism, separatism of nationalities and ultraism of religion, which is of great academic theoretical, immediate and profound historical si...

牢固树立多元文化的理念和正确把握先进文化的发展方向，有助于在世界范围内自觉地抵制恐怖主义，民族分裂主义和宗教极端主义。不仅具有重大的学术理论意义，而且也具有重大的现实意义和深远的历史意义。

But if anyone walks in the night, he stumbles, because the light is not in him.

11：10 若在黑夜行走，就必碰跌，因为那光不在他里面。