查询词典 three dimensional space

But from the point of view of the relativity theory, time as well as space is changed by passing from one c.s. to another, and the Lorentz transformation considers the transformation properties of the four-dimensional time-space continuum of our four-dimensional world of events.

但是从相对论的观点看来，时间和空间从一个坐标系过渡到另一个坐标系时都是要改变的，而洛伦兹转换就是考察事件的四维世界的四维时空连续区的转换性质的。

Thus, we may have to extend our view from one dimensional axis to multi-dimensional space, m -space, and to extend our research tools from scalars to multi-component vectors, m -vectors.

因而，我们可能要扩展我们的眼光，把我们的眼光从一维的"数轴"扩展到"多维空间"，把我们的分析工具从"标量"扩展到"多元向量"。

For case study, db4 optimum wavelet base is used to transform GR, SP and AC from a well in Shengtuo oilfield. By this transformation the logging data are expended from one dimensional depth space into two dimensional depth-scale space.

以胜坨油田某井为例，采用db4最佳小波基分别对自然伽马、自然电位和声波等测井曲线进行了多尺度分析，将一维测井数据拓展为二维深度－尺度空间，提取小波变换系数的时频色谱信息和能量信息，从而确定出测井曲线识别准层序界面的最佳尺度。

Sequence in the third middle member of Shahejie Formation in a well of Shengli oilfield, the SP data were processed by two-scale wavelet transform using quadric spline wavelet. With this transformation the logging data were expended from one dimensional depth space into two dimensional depth-scale space and wavelet coefficient curves on different scales were obtained.

以胜利油田某井沙三上亚段第Ⅲ层序为例，选用二次样条小波，对该井段SP测井数据进行二进小波变换，将一维测井数据拓展为二维深度－尺度空间，得到不同尺度上的小波系数曲线。

In order to improve the query precision further, we employ the Singular Value Decomposition techniques to convert the high dimensional proximity vector space into low dimensional orthogonal concept space to match the documents more accurately.

为了进一步提高邻近关系模型特征表示的准确性，我们使用单值分解技术，将高维邻近关系空间转化为正交的低维特征语义空间，消除邻近关系的次要特征对信息检索精度的影响，进一步提高基于邻近关系模型的信息检索精度。

On the foundation of the conception of orthonormal basis in finite dimensional Euclidean space,this paper provides the theory of completely orthonormal system in infinite dimensional Euclidean space.

从有限维欧氏空间的标准正交基概念出发，构建了无限维欧氏空间的完全规范正交系理论。

And then, we construct a system of equations -Standard Partition System of n-Dimensional Space- to generalize the properties of maximizing the number of regions made up by k partitioner in an n-dimensional space and look into the construction of each dimension.

接著我们归纳低维度的特性，并藉由定义出一组方程式-标准n维空间分割系统-来推广这些特性到一般的$n$维度空间中。

Our main idea is to map the singular problem in high-dimensional space into a nonsingular problem in reduced dimensional space without any loss of optimal discriminatory information with respect to Fisher criterion.

在该理论框架下，最优鉴别矢量集的计算只需要在一个低维向量空间内进行，从而极大地提高了求解效率。

This model uses nonlinear mapping to map samples into high dimensional feature space, and compares the distribution of each type of samples in the high dimensional space. So that a binary decision tree is constructed through clustering, which can make the more separable classes classified at the upper node of the binary decision tree. The model overcomes the accumulation of misclassification and avoids the condition of impartibility efficiently. At the same time, each node of decision tree uses binary least squares wavelet support vector machine to obtain higher generalization ability.

该模型利用非线性映射将样本投影到高维特征空间，比较每类样本在高维空间的分布情况，进行聚类构造出一个二叉决策树，使容易区分的类别从根节点逐层分类出来，有效克服了错分积累和避免不可分情况；同时，各个节点采用二值最小二乘小波支持向量机，以获得较高的泛化能力。

The two-dimensional structural units (such as silicon-oxygen tetrahedral sheet, octahedral sheet), interlayer space are assembled according to the sphere close packing manner, and the close packing layers parallel to {0001}. There are several mechanisms to release the difference in size while the silicon-oxygen tetrahedral sheet and octahedral sheet assemble the TO and TOT-type structural layers. The two types of structural layers with different interlayer space fitted together in six kinds of assembling modes and formed six kinds of crystal layers. The combinatorics analysis of the two-dimensional structural units revealed that there may be 28 kinds of TOT type interstradified minerals in six kinds of polysomatic assembling modes of interatradified structure. The structural layer is symmetrical for octahedron sheet in the structure of interstratified minerals and shows polarity characteristics.

结果表明，不同二维结构单元体（包括硅氧四面体片、八面体片、层间域的构筑基本符合球体紧密堆积原理，紧密堆积层平行{0001}；四面体片与八面体片构筑TO和TOT结构层时采取多种机制消除二者在二维尺寸上的差异；两种模式的结构层与不同类型的层间物组装形成六种组装模式的晶层；并通过二维结构单元体的组合规律的分析，计算出可能存在的28种TOT型间层结构，它们分属于6种间层结构多体性组装模式；间层结构中，结构层对于八面体片是不对称的，并在属性上表现出极性特征；间层矿物的晶层类型可用6种多体性组装模式加以表达。

Objective:To explore the feasibility of laparoscopy in diagnosing and treating of abdominal diseases.

目的：探讨腹腔镜用以诊断腹部外科疾病及选择治疗方案的可行性。

The lifetime of nylon 1010 and nylon 1010/POSS composites decreased with increasing temperature.

热重-红外联用分析表明尼龙1010在氮气气氛下的降解产物主要为小分子的低聚物，POSS并不改变尼龙1010降解产物的组成。