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By example analysis and experiment result compare,it introduces the usage and peculiarity of Multisim 2001 software platform of EDA technology in design type of experiment study on digital circuits,the advantages and disadvantages of EDA technology experimenthave been compared with actual operation,the important of combining"imitation experiment"and"material experiment"in design type of experiment of digit circuit teaching is put forward in this paper.

目前，国内高校的数字电路实验教学模式主要以2种方式进行：一种是完全采用常规的TTL逻辑器件(如逻辑门、触发器等中小规模集成电路)进行硬件连线测试，大多采用面包板或由多个双列直插座组成的各种实验箱。这种方式容易出现器件接触不良，接线不慎而烧坏芯片、电源等故障，学生实验课时得不到有效利用，影响对学生综合设计性实验能力的培养与提高。

A modified model combining the theory of state-dependent dilatancy with thermodynamics laws is proposed.

考虑剪胀对砂土内部状态的依赖，建立了统一的弹塑性本构模型以描述具有不同密度和应力水平的砂的变形特性。

The part of space belongs to the field intersected and bestrowed by architecturcal space and urban space, is provided with the diplex spacial attribute with architecturcal space and urban space, combining to undertake the dual space working talent.

复合公共空间是指现代城市建筑中对城市公众开放，承担一定城市职能并具备城市空间属性的特殊的建筑公共空间。

Instantiating the architecture of open CNC system to data communication components Currently, there are four types of describing and expressing software architecture:(1) figure expression drawing with rectangles and directed line segments;(2) path language in module that links traditional programming language module;(3) special software architecture description language combining object-oriented technology with the development experience of traditional program design language;(4) system description language based on components.

instantiating结构的开放式数控系统的数据通信元件目前，共有四种不同类型的描述和表示软件体系：(1)数字表达绘画rectangles定向线段；(2)路径语言模块连接传统的编程语言模块；特殊软件构架描述语言结合面向对象技术与发展经验的传统程序设计语言；(4)系统描述语言的组件。

In order to improve the accuracy of fingerprint directional image further, combining the advantage of the continuity of the point directional image with the advantage of the robustness of the block directional image to the noises in the fingerprint image, a novel concept on the continuously distributed directional image/field and the method to compute it in the fingerprint images are develope...

实践证明这种连续分布方向图过渡平滑、自然，既具有很好的连续性、渐变性和抗噪性，又具有极高的精确度，还兼有指纹点方向图的连续过渡性和块方向图的抗噪性优点。

Swithced reluctance machine is a new structure of electromotor. Combining this new structure with the modem power electronics technique and modem control technique, swithced reluctance drive has been one of the pop issues of the development of modem electric dirve.

开关型磁阻电动机调速系统融开关型磁阻电动机与现代电力电子技术、控制技术为一体，兼有异步电动机变频调速系统和直流电动机调速系统的优点，已经成为当代电气传动发展的热门课题之一。

Combining with modeling analysis,the mathematic models for several common networked control systems are proposed using continuous and discrete system theories.

本文从网络控制系统的特点和要求出发，对网络时延及其对网络控制系统的影响进行了阐述，并与建模分析相结合，利用连续和离散系统理论建立了几种较为常用的网络控制系统数学模型。

Results To construct several combining multiple regression mathematical models that use the arrested extent of epiphysis of sternal end of clavical and six joints to assess the chronological age of living subjects in Chinese Han female teenagers, and establish some Fisher's discriminatory analysis equations which are used to determine whether the chronological age of Chinese Han female teenagers has been to 14, 16 and 18 years old or not.

结果 建立了我国汉族女性青少年利用锁骨胸骨端及6大关节骨骺闭合程度联合推断活体年龄的多元回归数学模型，推导出判定我国汉族女性青少年是否已满14、16和18周岁的Fisher's两类判别分析方程。

Based on the Sino-US Forest Health Cooperation Program, along with review on lots of foreign and domestic literatures, the historical trends of attributes of forest and the concept of health in the modern society are discussed and the concept of forest health is redefined, combining the methods of logic discursion with demonstration analysis, qualitative analysis with quantitative analysis and the ecology with other related science from point view of macro and middle scope aspects.

本研究依托中美森林健康试验示范区建设，结合大量的国内外文献分析，从中观和宏观角度，采用逻辑推理与实证分析、定性分析与定量分析、生态学和其他学科相结合等方法，讨论了森林属性的历史演变和现代健康观，对森林健康进行了重新的定义，首次尝试建立了基于中国林情的森林健康基本理论体系，构建了森林健康的评价方法，结合文献研究对城市森林、农田防护林、马尾松林、笋用雷竹林的健康评价进行了理论验证，并通过江西信丰崇墩沟流域森林健康评价进行了案例分析。

Combining Inclusion-Exclusion principle with Disjoint Sum of products formula,the new formula contains terms which correpond one by one to a class of special subnetworks. For a given newtork,terms of new formula are fewer than those of corresponding stryanarayna formula. Finally,an example illustrates our conclusion.

该公式本质上是将容斥原理公式和不交和公式融合在一起，公式中各项和网络的一类特殊子网络一一对应，与相应的Satyanarayanna公式比较，该公式包含更少的项和更少的算术运算，并给出一个算例验证上述这个结论。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。