基矢量

The method solves the real time problem of how to extract the positive sequence active and reactive currents from an unsymmetrical and distorted three phase system by fan-in theory, and simplifies the system structure and reduces the computation burden.

既解决用扇合矢量法从三相不对称、含畸变的系统中提取基波正序有功、无功电流的实时性问题，又达到简化系统结构和减少计算量的目的。

Study and Simulation of Real-Time Detecting Method for Fundamental Positive Sequence, Negative Sequence and Harmonic components Based on Apace Vector.

基于空间矢量的基波正序、负序分量及谐波分量的实时检测方法。

The model of full vector Galerkin finite element method with transparent boundary conditions is established.

建立了基于透明边界条件的全矢量迦辽金有限元法分析二维光子晶体光纤的模型，并对椭圆芯等5种高双折射光子晶体光纤基模的模式双折射、限制损耗及色散特性进行了数值分析和比较。

According to the characteristics of tolerance in shape and relative position in engineering drawings, a new vector-based recognition algorithm based on key graphics characteristics and label character was proposed and implemented.

根据机械工程图中形位公差符号的特点，在矢量基础上，提出并实现了一种基於关键图形特徵和标注字符相结合的识别算法。

Methods of recording and mapping of ichnography of engineering geology and methods of making the vector and computer mapping of various initial data surveyed in different ways are introduced,horizontal base level of rock being taken as an example.

文中以岩质水平建基面为例，介绍了工程地质平面图图幅的编录测绘成图方法和利用不同方法测绘的各类初始数据进行矢量化计算机成图的方法。

In order to study the structure of face contacted blocks,the movability of three kinds of the face contacted block has been studied by vector analysis ,the scope of key blocks is dwindled, and the base for further study of the structure face contacted blocks has been established.

为研究面接触块体结构，运用矢量分析法判别了大同采场上覆岩层常见的 3种面接触块体的可动性，缩小了找关键块体的范围，对面接触块体结构的深入研究奠定了基

A vector signal space is defined by defining the two-dimensional (2D) orthonormal basis functions, and three critical measurements of performance, namely, probability of error, efficiency of spatial spectra and power efficiency are also defined as metrics for comparing candidate modulation schemes.

通过定义于二维空间的正交基函数建立了矢量信号空间，并定义了三个衡量空间信号设计方案性能的指标，即误符号率，频带利用效率和功率效率等。

Additionally,the method to determine position coordinate and trajectory vector of the shooting point with detection array is also studied in this paper.

另外还研究了利用正四面体探测基阵确定射击点空间位置坐标和弹道矢量的计算方法。

The flux hysteresis controller was ignored in the constant torque region and an improved method was proposed to make the estimation of torque easier.The proper stator voltage space vector was selected based on the output of the torque hysteresis controller and the sector which the current rotor flux locates in.

摘 要：针对无刷直流电机直接转矩控制中磁链观测困难、控制复杂等问题，提出了一种应用于无刷直流电机二二导通方式下的新型直接转矩控制方法：在电机基频以下调速时，略去了常规的磁链观测控制环节，改进了转矩计算方法，通过转矩滞环控制选择所施加的空间电压矢量。

A new brushless DC motor DTC scheme was studied to solve those problems associated with direct torque controlof brushless DC motor,such as difficulty to control flux and complexity to estimate torque.The flux hysteresis controller was ignored in the constant torque region and an improved method was proposed to make the estimation of torque easier.The proper stator voltage space vector was selected based on the output of the torque hysteresis controller and the sector which the current rotor flux locates in.

摘 要：针对无刷直流电机直接转矩控制中磁链观测困难、控制复杂等问题，提出了一种应用于无刷直流电机二二导通方式下的新型直接转矩控制方法：在电机基频以下调速时，略去了常规的磁链观测控制环节，改进了转矩计算方法，通过转矩滞环控制选择所施加的空间电压矢量。

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。