查询词典 mathematical models

The mathematical models of dual three phase induction motor in stationary reference frame were obtained,using the concept of vector space decomposition with loss of one stator winding excitation set.

摘 要：采用空间矢量解耦的方法建立了缺相双三相异步电动机在静止坐标系下的数学模型。

According to above equations, the equivalent circuits and vector diagram in dq axis are plotted out and mathematical models described by state space in dq axis are constructed.

根据上述方程，绘出dq轴的等值电路及矢量图，得到状态空间描述的dq轴数学模型。

Methods: Using the method of quantitative survey on various factors of vectorial capacity and the method of mathematical models.

采用媒介能量诸因素定量调查和运用数学模型的方法。

Two mathematical models have been deduced in the case of dense-phase and light-phase conveying respectively. Combining the capacitance phase concentration sensor designed and the traditional Venturi flow meter, the powder velocity and instantaneous mass flowrate are obtained by measuring concentration and differential pressure signal.

本文最后提出了一种差压—浓度法测量气/固两相流瞬时质量流量的新方法，分别建立了稀相和浓相输送情况下的粉料速度和流量测量的数学模型，即将所研制的电容式相浓度传感器与传统的文丘里流量计相结合，通过测量浓度信号及差压信号，求得粉料的传送速度及其瞬时质量流量。

It is shown that the mathematical models are veracious and applied by both simulation and application.

再采用下降法求解非线性方程组，此方法收敛快，精度高，计算量小，特别适合三相不平衡负载。

The paper reviewed the host selection mechanisms and rules of xylophagous insects and their application foreground in forest health evaluation. According to the rule that some secondary xylophagous insects always accompany with trees which are sub-healthy or unhealthy, ideas of diagnosing and evaluating forest health betimes using xylophagous insects were posed. Mathematical models would be established based mainly on interactions between quantity of xylophagous insect populations and status of forest health, interspecific interactions (community structure, biodiversity) and environmental factors were also added as supplementary parameters, in order to quantitatively analyzing and comprehensively evaluating forest health and its developing trend.

本文综述了蛀干昆虫对寄主植物选择机制和规律的国内外研究进展及其在森林健康评价中的应用前景，根据蛀干昆虫中次期性种类总是与亚健康和衰弱林木相伴的规律，提出了利用蛀干昆虫早期诊断和评价森林健康的思路，以蛀干昆虫种群数量与林木健康状况的相互关系为主，辅以物种间相互作用关系、环境因子等建立数学模型，定量分析和综合评价森林健康及其发展趋势。

According to discrete conception, mechanism of image blur caused by uniform motion is analyzed. Mathematical models of image blur and restoration by uniform rotation motion are established by means of Z transform.

从离散直观角度分析了由匀速旋转运动引起图像模糊的机理，通过Z变换方法，建立了由匀速旋转运动引起图像模糊的退化模型和恢复模型，并给出了快速算法。

We use the means of Agarwal、Mohamed Solima etc. and solve the mathematical models of formation and fracture for the produation forecasting.

压裂井的产量预测，采用了Agarwal、Mohamed Solima 等人的方法，用油藏模型和裂缝模型联立求解。

The variograni of No.100 ore-body in three directions have been calculated, and the variogram curves were formulated. All these curves are leap type. The mathematical models of grade variability of Sn. Pb.. Zn.. Sb and Ag have been established respectively, the structural analysis of No.100 ore-body indicates the ore-body varies band anisotropically.

计算并拟合了100号矿体三个方向的变异函数，各变异函数曲线均为跃迁型，分别建立了Sn、Pb、Zn、Sb、Ag五元素的品位变化的数学模型，结构分析表明100号矿体呈带状各向异性变化。

In experimental study, the validity of the mathematical models is experimentally verified. The structure parameters, permeability, filtration performance and mechanical properties of new anticlogging filtration material and two traditional nonwoven geotextiles are tested and compared.

在实验方面，通过垂直渗透系数实验及淤堵实验分别验证了相应理论模型的正确性，并分别测试了本文研制的五组试样的结构性能参数和渗透性能、过滤性能以及机械性能，分析了针刺密度对织物各项性能指标的影响。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。