数学模型

On the basis of thermodynamics, the mathematic model of the working process of water-injected twin-screw air compressor has been established.

本文以变质量热力学为基础，分析了压缩过程中的气、液两相的潜热和显热的交换，考虑了两种泄漏模型，建立了喷水螺杆空气压缩机工作过程的热力学数学模型。

Setting up the physical models and mathematics models of the novel two-stroke MFPSE.

建立了新型二冲程微型摆式内燃机的物理模型和数学模型。

Financial time series is always studied as a whole in existent financial econometrics based on statistical models, some rigorous hypothesis are often indispensable. Especially, it is unbefitting for importuning all data of series to meet a fixed mathematics model.

目前已有金融计量经济方法主要通过统计模型从全局的角度来研究时间序列，这种方法一方面依赖苛刻的假设条件，另一方面它要求所有数据都符合一个固定的数学模型，显得过于牵强。

Mathematical models of CAD model optimization are built with exponential penalty to translate constraint optimization into unconstraint optimization.

分析了截面曲线特征和曲面特征的约束表达，建立了约束驱动特征模型优化的数学模型。

The model/L=f(a(1-ε)/(ε~3)u~2 coulddepict the overland flow in the litters, there f" was a undetermined coefficient, when the flowvelocity was very low, the Ergun equation f"=(4.17)/+0.29 could depict the overland flow.

坡面流在枯落物中流动的数学模型，可用下述模型描述hf/L=f"a(1-ε_ε3u2，其中包括一个未知的待定系数f"，在流速较低时，可用欧根方程描述：f=4.17/Re+0.29。

For this purpose, the safety state of the structure is regarded as a fuzzy set in the universe of discourse of the structural state, i.e. the safety event is considered as a fuzzy event and the mathematics model of the fuzzy event probability is adopted to be a unified model of the structural reliability analysis.

为此，本文将结构的安全状态看作是结构状态论域中的一个模糊集合，即认为安全事件为一模糊事件，采用模糊事件概率的数学模型作为结构可靠性分析的统一模型。

Moreover, there are some unsteady factors occur in practical tub flowing, In article, the change of phase state and unsteady flow factor in flow process are considered, the mathematical model is established.

文中综合考虑了流动过程中相态的变化和非稳定流动因素的影响，建立了数学模型，该模型能正确地预测产水凝析气井的井筒动态。

Based on these phenomena,mathematical models of four effect parameters were built. According to the variables separation method,the method of weighted function was brought forward and used in decomposing the multidimensional function.

在建立效应参量模型时，参照分离变量法，提出使用加权函数的方法把多维函数分解成多个1维函数相乘，基本解决了利用有限实验数据建立数学模型的问题。

The research on a general variation principle for web offset press while it is running is carried out in this paper.

本课题对卷筒纸印刷机在印刷过程中张力变化的一般规律进行了研究，建立了较符合实际情况的张力变化的一般规律数学模型，并用Matlab软件对模型进行仿真分析。

This paper analyses the mathematical model for BDFM (brushless doubly-fed machine) based on synchronous coordinates in the point of rotor speed d-q model. A new type of power control system is designed by using flux linkage oriented vector transformation control technology.

从转子参考轴d-q模型出发，研究同步坐标下的无刷双馈电机的数学模型，根据BDFM的特性，采用磁链定向的矢量变换控制技术，设计了一种新型的功率控制系统。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷