It can work under a variety of dredging conditions with good benefit . because of the complexity in underwater soil , river bed condition and dredging process of a real dredging project , dredging conditions are very often unsteady 在实际的疏浚作业过程中，由于水下土质、河床形态和作业过程的复杂性，严格地讲，疏浚工况是非恒定的。
Then a dynamic analysis model based on bp ( back - propagation ) network was established in accordance with the complexity and time - consuming character of the dynamic analysis in the reliability simulation of elastic linkage mechanism 针对进行可靠性数值模拟时求解机构动力响应过程的复杂性和耗时性，构建了基于bp网络的动力响应分析模型。
Aiming at the complexity of devanadium process , this paper put forward an advice that the more precise model , then traditional mathematical model should be made by means of the nn and other ai technology 针对提钒过程的复杂性，提出转炉提钒建模应以神经网络为主要技术手段，结合其他人工智能技术，建立起比传统数学模型具有更高精度的模型。
It was demonstrated that none of the current models fits the experimental data of plant infusion satisfactorily , because of the difference of plant matrices , the variety of extracting components and the complexity of infusion processes 研究结果表明：由于植物组织结构和所含功能成分的多样性以及浸提过程的复杂性，目前尚无一个普遍适用的模型。
With the progress of the computer technology , people are beginning to apply the approach that includes the test in laboratory and the numerical simulation to study the process of the flow , the heat transfer and combustion in the chamber 由于炉内换热过程的复杂性，单纯依靠实验室试验台进行研究是很困难的。随着计算机技术的不断发展，人们开始寻求用实验室试验结合数值模拟的方法来研究炉膛内的流动、传热及燃烧过程。
Abstract : on the basis of the current situation of the researches on earthquake prediction and earthquake mechanism ， the authors of this paper give their opinions on the complication of the crust and its dynamic process , and make a brief description of the nonlinear dynamic finite element method 文摘:就地壳及其动力学过程的复杂性,结合地震预报与机理的研究现状和方法,提出了个人的看法,简介了非线性动态有限元方法。
In the last years , scientists has had terrific progress and many study fruits in the subject of porous media ' s drying . however , the experiment was still primary study means in the subject for the process of porous media ' s drying was complicated , changeful , non - steady 多孔介质干燥学科发展到今天已经取得了长足的进展，研究成果众多，但由于多孔物料干燥过程的复杂性、多变性和非稳定性，使得对多孔介质干燥过程的研究仍然以实验研究为主。
On the basis of the sum - up and analysis of the development of capp and its present status of application home and abroad , the author is determined to make some research in this paper as follows . 1 . the paper studies the characteristic of product - oriented capp and the complexity and diversity of its development , puts forward the framework of product - oriented capp , sets up the relevant function model and information model of product - oriented capp system by analyzing and designing the product - oriented capp system applying the universal design and analysis method of complex system - idefo and ideflx 研究面向产品的capp系统的特点和其开发过程的复杂性和多样性，提出了面向产品的capp系统的体系结构，在这个过程中，运用复杂系统通用的设计和分析方法? idef0和idef1x ，对面向产品的capp系统进行分析和设计，建立面向产品的capp系统的相应的功能模型和信息模型，并在所建立的信息模型的基础上，对面向产品的capp系统中所涉及的数据库表进行了设计，提出了相应的数据库设计方案。
According to the complicated electromagnetic transient state process of the passive feedback coils , a method that can be used to calculate the equivalent time constants and the electrical parameters are given in this paper . these parameters are important to the design of the device and the power system , and also provide the evidence for the experiment of controlling the plasma unstability 针对被动反馈线圈电磁暂态过程的复杂性，给出了求解线圈等效时间常数和电气参数的方法，这些参数不仅对装置的设计和电源系统的设计是重要的，而且为控制等离子体垂直位移不稳定性的实验提供了依据。
However , it ' s so difficult to get the formulae about the heat transfer in heat exchangers that this thesis will present the theories and tests of compact louvered fin heat exchangers used in the internal combustion engine from the point of view of experiment 但由于散热器传热过程的复杂性，纯粹从理论上推导有关传热公式十分困难。本论文工作在选定板翅式机油散热器作为研究对象后，从获取试验数据入手，通过采用神经网络算法，对选定散热器的传热过程进行了建模分析。
