查询词典 vector field

After studying the theory of combined signal processing with acoustic pressure and particle velocity, a method of direction estimation underwater, which is based on intensity measurement using an acoustic vector sensor, is presented. In the low frequency field with kinds of line-spectra, azimuth angle estimation is achieved based on the probability density statistics and bar graph approach. It can preferably resolve the problem of left/right bearing resolution and estimate the direction of space.

为了对水下目标进行定位，基于声压与振速联合信号处理的理论，研究了复声强法对水下目标信号的定向技术，并使用概率统计和直方图的理论对目标的方位角和俯仰角值进行了估计，在线谱分量存在的低频段对估计角度进行了概率统计，较好地解决了左右舷的分辨问题，实现目标的全空间无模糊定向。

With a gradual contraction longitudinal straight inlet port applied on the Multi-Point Injection natural gas engine, the concentration of natural gas and the pressure field in the intake manifold after the injection of natural gas were investigated, then in the following intake process the volocity vector map and mass distribution of natural gas inside the cylinder were also numerically examined.

在此基础上，考察了渐缩形直进气道应用於多点电喷天然气发动时，天然气喷射后进气岐管内的天然气浓度场和压力场，以及随后天然气-空气混合气在气缸内的质理分布和速度分布。

While under Port Columbus International airport civilian radar approach control at 15 miles out and descending through 8,000 feet I was given permission to vector 30 degrees right to investigate what appeared to be a 2nd sun about 2/3 the size of a football field parked on the back side of a large cumulous cloud at about 4,000 feet and 5 miles NNW of the airport.

当在哥伦布港口国际机场民用雷达15英里作用半径外和慢慢通过8，000英尺我得到无线电许可要求向右转30度去调查在飞机场的4，000英尺和5英里NNW的大约是2/3足球场大小大积云状的云层后面停留的第二个太阳。

According to the characteristic of the wave field data, a simple algorithm is used to calculate the normal vector at the nodes.

文中针对表示波浪面的数据集的特性，采用了一种简单的节点法矢量算法。

In this field the amplitude of voltage space vector is distorted and phase angle is continuous.

空间矢量过调制算法的研究。

By initiating the values of vector description for a primitive element, all finite field elements could be generated by continue cyclic shifting, GMW sequences then could be generated by trace function calculation.

通过预置本原元向量表达的初始值，不断的进行向量循环移位来生成有限域中的元素。

For larger inclination and impact angles, or inner field lines close to magnetic pole, the rotating dipole PA curves show more significant distortion comparing with the results of rotating vector model.

相比旋转矢量模型的结果，旋转磁偶极场偏振位置角曲线在大磁倾角、碰撞角，或靠近磁轴的内层磁力线上有显著的变形。

By analyzing the technology requirement of electric actuators,RFOC（rotor field-oriented control）method was proposed. The fundamental mathematics equations of induction motor in the general synchronously rotating reference frameused for vector control were achieved by coordinate transformation.

中文摘要：分析智能型电动执行机构的技术要求，提出了转子磁场定向的空间矢量控制方案，通过坐标变换得到了适用于矢量控制的同步旋转坐标系统下的感应电机数学模型，推出了转子磁场定向方程。

Let , a scalar field, be defined on a domain D in,, then the vector

设是定义在三维空间的区域 D 上的标量场，，则向量

In the field of urban planning, vector is very important to use remote sensing data.

在城市规划中，矢量化是遥感数据有效利用的重要一步。

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。