查询词典 vector sum

In which the second order degenerate equations associated with square sum operators of Hormander vector fields are the most important classes. People are used to calling them subelliptic operators because they have properties similar to that of classical Laplacian.

由于该算子具有与经典Laplace算子类似的次椭圆性质，人们习惯上把由向量场构成的二阶线性及非线性算子通称为次椭圆算子，相应的方程称为次椭圆方程。

In addition,this article consider the sum ofsquare of gray-level gradient vector module as clarity-evaluation-function ofout-of-focus blurredred image and discuss in detail relationship amongclarity-evaluation-function and defocus blurred image as well as process of rebound .

超声B 型扫描成像是以A 扫为基础的一种灰度调制性显示方法，B 扫所得到的是与声束传播方向垂直的物体截面图像，可以显示垂直于探测面的缺陷形状和大小。

The operation of finding the sum of two vectors is called vector addition .

求两个向量和的运算，叫做向量的加法。

On this basis, it is given to use Q function based by vector in place of angle sum to calculate relationship between point and polygon.

在此基础上，提出了以矢量和为基的Q 函数替代角度和进行包含关系计算的方法。

A vector that is the sum of two or more other vectors .

两个或两个以上向量相加得到的向量。

B The gear real tooth surface is represented by a sum of two vector function that determine the theoretical tooth surface and the deviations of the real surface from the theoretical one, and the tooth contact analysis of real surface is completed.

将实际齿面表示为理论齿面和偏差曲面之和，进行了实际齿面的轮齿接触分析。

The problem is how to consider the relativistic corrections to this potential. Adopting the assummation that the quark interaction is the sum of the usual one-gluon direct exchange and the mixture of linear scalar and vector potentials, we structure the relativistic corrections of order v2/c2to the Cornell potential, including the annihilation potential for the quark and antiquark of the same favors which plays the same role with the one-gluon direct exchange at short distances.

采纳库仑势源于单胶子直接交换，而线性禁闭源于标量和矢量的混合，同时考虑在短程区域与单胶子直接交换起同样作用的同味正反夸克的湮灭，构造了静态夸克-反夸克势到v~2／c~2级次的完全相对论修正，并拟合计算了重介子偶素的能谱，讨论了相对论修正对重介子偶素能级分裂的作用。

It broke through the constraint that the sum of each weight vector was equal to 1, thus the homogeneous weight could be more flexible. The improved model could lead to relative optimal gray correlation degree of each criterion. Super-efficiency DEA could enhance the discernment ability as well. It studied the influence factors of vacant commercial housing in Beijing city.

该混合算法能够更加客观地确定权重向量，并且突破权重和为1的限制，使得均一的权重更加灵活；同时，可以得到各属性的相对最优灰色关联度，超效率DEA能够增强模型对灰关联度的分辨能力。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。