结合原理

The main research contents of the dissertation is as follows:(1) It studies the basic structure and working-theory of crank press driven byvarying speed.

结合课题的研制，本论文的主要研究内容如下：(1)研究变速驱动曲柄压力机系统的构成和工作原理，提出本论文的研究任务。

Also we may design the valve group for the distributor of the motor,like with balancing valve,high-pressured shuttle valve,velocity modulation cross valve or other performance valve groups.

摘要本设计是通过对液压绞车工作原理、工作的环境和工作的特点进行分析，并结合实际，在进行细致观察后，对液压绞车的整体结构进行了设计，对组成的各元件进行了选型、计算和校核。

The article incorporates Huygens principle with existing fire behavior models of surface fire spread,crown fire spread,fire acceleration,builds forest fire simulation models which fit to Anning s terrain,and develops related dynamic modules for Yunnan Province.

利用惠更斯原理进行林火蔓延模拟，结合国际上成熟的林火行为模型(Rothermel的地表火模型，Van Wagner的树冠火蔓延模型，McAlpine的林火加速模型)，建立适合云南省特殊地形的林火蔓延动态模型，并开发相应的动态模拟模块，在云南特殊地形地貌上的林火蔓延模拟做出一定探索。

Using the principle of diamond v ibrational energy for reference , SCENT HOUSE utilizes the unique functions of diamond micro-dermabrasion lotion to combine diamond micro-dermabrasion lotion and the paste of personal care products to better protect human skin and hair, achieving the perfect unification of " nature, science and fashion ".

水是美丽之源，SCENT HOUSE借鉴钻石波动能原理，利用钻石微雕水的独特功能，让钻石微雕水与护理品膏体配方有机结合，更好地保护了人体的肌肤和毛发，真正达到了&自然、科技、时尚&的完美统一。

The working methods and principles of the ditching machine coming from home and abroad are analyzed and compared in this paper. By combining the present planting style of rape in the southern area of our country and the large scale usage of small rotary cultivation machine, the advantages and disadvantages of ditching mode between former and post-position are compared. Finally, the ditching components of disc pattern are designed by adopting the post-position to realize the mechanization of ditching in rape planting.

本文分析比较了国内外开沟机械的工作方法和原理，结合我国南方现有油菜种植方式及现有小型旋耕机大量使用的现状，比较了前置和后置式开沟方式的优缺点，采用后置式开沟方式设计圆盘式开沟部件，实现油菜种植机械化开沟和覆土。

The software join electronicarithmetic together with graphics system of computer, and makes quantificational,intuitionistic, synchronous and dynamic simulation. The software makes simulationsabout water hammer and surge in surge chamber of water diversion system or tailwater system in the Nuo Zha Du Water Power Station. Then the author validates thesoftware scientific quality and feasibility by the result data of physical modelexperimentations.

本文系统地介绍了作者研究开发的水力过渡过程可视化仿真软件的原理与方法，该软件把电算法与计算机图形系统结合起来，对水力过渡过程进行定量、直观、同步地动态仿真；然后对糯扎渡水电站引水、尾水系统进行水击与调压室水面振荡仿真，并通过水工模型实验结果验证了该软件的科学性与可行性。

To eliminate burning of air filters for DF 4 locomotives, the failure reasons were analyzed based on the structure and operating principle of dust exhaust, and the preventive and improved measures were proposed.

针对东风4 型机车空气滤清器烧损的故障，结合排尘装置的结构和作用原理，分析了故障发生的原因，并提出了防止烧损的预防改进措

Assessable mathematical model of safety evacuation in subway station was proposed with combined principle of fuzzy mathematics and fuzzy hierarchy analysis process.

根据地铁站的火灾特点和安全疏散的影响因素建立了评估因素集，结合模糊数学原理和模糊层次分析法，建立了地铁站安全疏散评估数学模型。

In the third chapter, using the methods of nonlinear feedback functions and Lyapunov functions and combining analytical with numerical methods, the nonlinear feedback methods are introduced and the synchronizations of chaos in Hadley system of aerographs and LFRBM system of physics are realized. Some of nonlinear feedback functions are constructed.

第三章在介绍非线性反馈方法原理的基础上，应用非线性控制的基本思想及Lyapunov函数方法，将解析法与数值法相结合，分别对气象学中著名的Hadley环流和物理学中的LFRBM系统进行研究，找到了一类非线性反馈函数，实现了混沌自同步，并利用Mathematica软件进行仿真实验，数值结果说明了该方法的有效性。

Firstly, the thesis discusses the principles and framework of E-commerce, and introduces the architecture key techniques advantages of mobile Agent systems. It also compares a few known mobile agent developing platforms, especially IBMs Aglets. Secondly, after analyzing the Aglets system, we have devised and developed a intelligent E-Commerce prototype system using Java, Jsp, Servlet JDBC and MVC design pattern based on Agelts platform.

本文首先论述了电子商务的基本原理及其系统结构，对移动Agent系统的体系结构、关键技术、技术优势、安全性方面作了完整的介绍，并对几个比较著名的移动Agent开发平台进行了比较分析，然后着重研究了IBM的移动代理平台Aglets，并以Aglets为开发平台结合其它技术，设计开发了一个智能商务系统原型。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。