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The curriculum comprises the fundamental concepts of point set topology, differential manifold and differential dynamics, followed by the conceptions and theoretical methods of abrupt change, bifurcation, chaos and fractal. The analysis and compare combined with the practice in power system make it easy for readers to learn the basic methods of nonlinear dynamics and write high quality papers.

本课程主要内容包括点集拓扑学、微分流形和微分动力系统的基本概念，后面部分主要涉及到突变与分叉、混沌、分形和分维概念和理论方法，并结合电力系统实际例子加以分析与比较，使读者很快掌握非线性动力学的基本方法，能够写出高质量的文章和学术论文。

Objective To compare the performance of methods used in the microarray data analysis for selecting differentially expressed genes.

目的 比较基因芯片数据分析中常用的用于筛选差异表达基因的几种方法，探讨各方法的筛选效果。

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。

According to the demand of high magnetic field power supply, reference is increased with a set ramp rate and stops at a set stable value, so reference system is composed of digital setting and digit to analog converting circuit. But the stability of reference is mostly guaranteed by the performance of D/A circuit, so D/A circuit is particularly studied in reference system. The scheme of D/A circuit, the selection of DAC and its voltage reference, hardware anti-jamming design and PCB design are discussed in detail, and software of remote control and PLC are discussed in brief. Zero-flux DC current transformer well satisfies the demands of the high stability of Load current detection unit, so the principle of zero-flux DC current transformer is analyzed; in the mean time a project which detects the long term stability is designed. During 8 hours, analog signal which is detected with high precision digit multimeter is recorded in computer at 1HZ frequency by GPIB communication. The drift error source and related parameters are explained in the compare-amplify part. Detailed subtraction circuit is designed; also amplifier chip and periphery components are selected and verified according to the theory of error analysis.

根据强磁场电源的需求，参考源应按照软件设定的斜率逐渐上升到设定稳态值，则参考源系统应由数字给定和数模转换电路两大部分组成，而参考源的稳定度主要依靠完成数模转换功能的模拟电路的性能来保证，因此本文对参考源系统的研究以数模转换电路为重点，分别从电路方案的确定、数模转换芯片及其基准电压源的选取和验证、电路板硬件抗干扰和PCB设计几方面进行了论述，然后对数字给定部分的远控组态和PLC程序设计作了简要介绍；采用零磁通原理的直流电流转换器很好地满足了对负载电流检测单元高稳定度的需求，本文详细分析了零磁通检测的原理，并在选定此种类型电流转换器的基础上设计了一套检测长期稳定度的方案，8小时内以1秒为采样周期，通过计算机Labview程序和高精度数字电压表的GPIB通讯，将被高精度数字电压表数字化后的模拟信号采样值连续记录至计算机中；比较放大环节简要阐述了漂移产生的原因和相关参数指标，确定了具体的减法电路形式，并根据误差分析理论对运算放大器和外围元器件进行了选取和验证。

If you compare historical incidents and recent disturbances, you can see the tolerance of the people is diminishing.

如果您比较历史事件与最近的动乱，您可以看到宽容的人越来越少。

AIM: To compare the dioptre results obtained by wavefront analyzer and subjective refraction test, respectively, and to evaluate the accuracy and reliability of lowerorder aberrations measured by wavefront analyzer.

目的：比较波前像差仪与主观验光法对屈光度检查的结果，探讨波前像差仪对低阶像差测量的可靠性和准确性。

To compare the amino acid and dipeptide composition of proteins from piezophilic and non-piezophilic microbes is of great significance for understanding the stability of piezophilic protein and directed mutation of them.

比较嗜压和非嗜压微生物中蛋白质在氨基酸和二肽组成上的差异对嗜压蛋白稳定性机理的了解及在此基础上的定向改造具有重要意义。

Compare the similarities and differences to sum up the experiences and lessons which not only can help us to fully understand the development of our foreign policy but also can offer some theory direction for our 21St century diplomatism.

比较两者的外交思想，work总结经验教训，不仅可以充分认识当代中国外交政策的fazhan发展，而且将为21世纪的中国外交工作提供一定的理论指导。

Compare diplont.

比较 diplont。

To compare with traditional radiography image, direct digital radiography image have higher quantity and include further more information.

它与传统的X线摄影相比，具有更高的影像质量，包含更多的影像信息。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。