矢量

In an infinite dimensional space there always exist two subspaces whose vector sum is different from their span.

在一无限空间中恒存在两个子空间，其矢量和与其张成空间不同。

With the method of vector analysis and coordinate transform,the direct solar radiation angle factor、the earth infra-red radiation angle factor and the reflected solar angle factor by earth are calculated.

在计算中利用矢量分析和坐标变换的方法求解出了太阳直接辐射、地球红外辐射和地球反照的辐射角系数，再根据传热学理论建立了瞬态热平衡方程。

At last, the Double Message Signal is proposed and the non-interfere condition is presented that the steering vectors are orthogonal in the weighted inner product space, with the inverse matrix of background covariance as the weighting matrix. The optimal polarization states are designed, according to the EM background.

最后，提出了一种双信息信号传输的方案并导出了无互扰传输的充要条件：两期望信号的信号矢量在以干扰噪声协方差矩阵的逆矩阵为加权矩阵的加权内积空间中正交，在给定的电磁环境下设计了双信息信号的极化状态。

The method of slide-mode variable structure control is such a strategy that is characterized of low mathematical model precision, insensitiveness to system parameter variation and external disturbances, omission of parameter identifications, fast dynamic response and easy implementation. These advantages make it suitable to high performance vector controlled AC motor drives.

滑模变结构控制是一种强鲁棒性的控制方法，对系统数学模型精度要求不高，具有快速响应、对参数及外部扰动变化不敏感、无需系统在线辨识，实现简单而且很适合计算机实现等优点，因此，很适合高性能的交流电机矢量控制系统。

Firstly two theoretical basis of Direct Torque Control technique are researched----Field Acceleration Method and instantaneous space vector theory.

首先探讨了直接转矩控制技术的两大理论基础──磁场加速方法与瞬时空间矢量理论。

In this paper, four examples were given to prove that vector integral methods can be used to calculate several simple problems of electromagnetic fields directly.

电磁学中有些简单问题中的电磁场可以直接使用矢量积分法求解，本文给出了4个例子。

In this paper,the singularity in the integrand of electrical field integral equation for 3-dimensional vector fields scattering is first analyzed.

本文研究了电场积分方程中被积函数奇异性的处理方法，特别是三维矢量散射分析中出现的高阶奇异性，给出了两种解决积分方程奇异性的数值方法。

In the new model, the similar approximation can be obtained from the integral expression of vector potential and the Lorentz gauge, therefore a set of state equations like the MNA in traditional PEEC can be built.

在本文的方法中从矢量磁位的积分表达式和洛仑兹规范出发，可导出与传统PEEC模型中的改进节点法方程相应的状态方程。

An integral projection algorithm for Vector Quantization is proposed in this paper,integral projection is used in every 4×4 block firstly,and then carry on vector quantity with the integral codebook.The memory area of codebook and computation of encode can be reduced greatly while the quality of the picture only loses slightly.

提出了一种积分投影和矢量量化相结合的图像压缩算法，将图像的每一个4×4分块先进行积分投影，然后再与积分投影后的码书进行量化匹配，大大减少运算量和码书存储面积，而图像的质量只有轻微损失。

The vector surface integral equation can't be applied to numerical computation directly because its integrands possess the high order singularity.

矢量的面积分方程因其被积函数具有高阶奇异性，不能直接应用於数值计算。

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。