矢量

A vector having coordinate components that are the partial derivatives of a function with respect to its variables.

斜率一个矢量，其坐标分量是一个函数对其变量的偏微分

Mathematics A vector having coordinate components that are the partial derivatives of a function with respect to its variables.

斜率：一个矢量，其坐标分量是一个函数对其变量的偏微分

Vector derivative ; matrix ; the plane complex movement of a particle

矢量导数；矩阵；动点的平面复合运动

Fourth, the thesis investigates the path tracking from state space description viewpoints.

第四，基于状态矢量空间描述来分析路径跟踪控制。

The image module algorithm is used to acquire the sports estimation vector of whole pels.

然后在高斯金字塔的顶层进行初估计，采用图像块法得到整像素的运动估计矢量。

By using this method,9 switching states were ensured during a sampling period of the matrix converter,and the duration of each switching st...

实验结果表明，采用提出的空间矢量脉宽调制优化调节策略，不仅消除了输出电压中的错误脉冲，而且降低了输出电压的总谐波畸变率，在输出频率为15Hz时，THD降低约15%，有效地提高了矩阵式变换器的输出波形质量，保证了系统的安全可靠运行。

Three new methods are provided, which are demodulation by means of envelop periodogram, multi-path signal and vector signal.

提出了包络周期图法、利用多途信号方法和利用矢量信号方法。

The Permanent Magnet Synchronous Motor vector control system based on fuzzy control is the research object in this paper.

本文研究的是基于模糊控制的永磁同步电机矢量控制系统。

The complex relative permittivity and permeability of the absorber were measured in a frequency range of 2 to 18GHz.

HP8722ES矢量网络分析仪测量了样品在2~18GHz频率范围内的复介电常数和复磁导率。

The inner flow field of modified Perspex impeller of a centrifugal pump was measured by advanced PIV system, and the absolute speed vectorgraph and original data of the axial eddy were acquired.

采用先进的粒子图像测速系统对普通叶轮改型设计后的有机玻璃叶轮内部流场进行无接触测量，获得轴向旋涡流绝对速度矢量图及原始数据。

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。