To Classify the Conic Section with Primary Alternation; A branch and bound algorithm for a kind of indefinite quadratic programming

A curve or surface whose equation ( in Cartesian coordinates) is of the second degree. The circular points are really a degenerate conic.

方程式是二次方程式的曲线或表面。虚圆点实际上是一退化的二次曲线。

Locus of central point of the conic sections' segmental tangent line

圆锥曲线的切线段的中点轨迹

The Defect of Linear Congruent Generator and Improvement on It

线性同余发生器的缺陷及其改进

For given congruent real symmetric matrices A and B of n-th-order, the author gives here the general form of their complex congruent transformation.

对给定的合同的实对称n阶阵A和B，给出其复合同变换的一般表示形式。

Some Special Matrices Congruent with Diagonal Matrices

几类特殊矩阵与对角矩阵的合同

The relationship within non-degenerate linear substitutions which changes quadratic forms into gauge forms over real number field or complex number field and introduction the result into congruent matrices are discussed in this paper.

本文探讨了把实数域或复数域上的二次型化为规范形所采用的非退化线性替换之间的关系，并引入到矩阵的合同关系中。

Abstract: This paper discusses the relation between congruent matrices and similar matrices in linear algebra and their use in geometry

本文讨论了线性代数中合同与相似之间的关系及在几何中的应用

General Form of the Change of Matrix in Congruent Matrices

关于合同变换矩阵的一般形式

Both congruent and similarity of matrix are equivalence relations.

矩阵的合同关系、相似关系都是等价关系。

The Similar Transformation and Congruent Transformation of Block Matrix

分块矩阵的相似变换和合同变换

By means of congruent transformation in matrix, the method of transforming real quadratic form into standard form and the method of normal orthogonal basis are given in this paper.

借助矩阵的合同变换法，给出了化实二次型为标准形的方法、求标准正交基的方法，并给出了正定二次型判定定理的新证明。

A new concept of congruent matrix is introduced in the paper and its equivalent transformations are discussed.

本文引进了同馀矩阵的新概念，并讨论了它的等价变换。

Butterfly Mechanism consists of two congruent equilateral triangles.

蝶形单元是由两个全等的三角形组成。

Exploring the Best Method of Testifying the Congruent Right Triangles

探索直角三角形全等的最佳途径

Secondly, two new methods implemented easily about improvement with velocity compensation on the average time method are brought out, one is using Doppler velocity to compensate relative velocity, the other is using the estimated target speed in approximate congruent triangles.

提出两种易于实现的、对时间平均进行速度补偿的方法：一是利用多卜勒测速结果进行径向速度补偿；二是在近似三角形内，利用目标的估计速度进行补偿。

In the matching process the parameters of rotation and displacement were obtained by two congruent triangles, then the point-pairs matching would be performed on the transformed sets.

比对过程中首先根据两个集合中的全等三角形求出它们的旋转和平移参数，然后对根据参数进行转换后的特征集合进行点模式匹配。

Determination of Congruent Melting Constituent of Li_2B_4O_7 Crystal Using Thermal Analysis Method

用热分析法测定Li2B4O7单晶的一致熔融组成

The α phase is a congruent melting compound, its congruent melting point is 1 190 ℃. The β phase is an incongruent melting compound, its incongruent melting point ( peritectic temperature) is 1 100 ℃.

α相是熔点为1190℃的同成分熔融化合物，β相是转熔温度为1100℃的异成分熔融化合物。

The anomalous violet-shift of absorption edge of linbo_3 crystals of the solid-liquid congruent point composition

固液同成分点组分的LiNbO3晶体吸收边的异常紫移

Study of the ultraviolet absorption edge of LiNbO_3 crystal solid-liquid congruent point composition

固液同成分点组分LiNbO3紫外吸收边研究