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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。

CBFEC emphasizes direct correspondence of concepts in EC with its software architecture for ease of understanding and using; minimal coupling with specific problem structure for easy adaptation it to solve a large number of wholly different problems; interface-centered design for extendibility. To achieve those objects, the problem-solving method of EC is analyzed and the problem-solving procedure of EC is divided into three interactive aspects: population-based stochastic searching mechanism, problem specific information to implicitly guide the stochastic searching, and the observation and control of the computation procedure of EC. Then the key concepts of EC are identified in those three aspects; the normal implementations of those concepts are summarized; the interfaces represents those concepts in software are abstracted; the collaborations of components through those interfaces are designed. CBFEC is implemented on mainstream component software platform COM/DCOM (Component Object Model/Distributed COM from Microsoft), which includes interfaces definitions, commonly using EC components implemented those interfaces, such as Simply EA component, Steady State EA component, EA component, EA component, Population component, Tournament Selection component, Linear Ranking Selection component, Nonlinear Ranking Selection component, Random Number Generator component, etc, and the collaborations of those components through those interfaces.

具体的做法是把演化计算看作是基于组件的软件工程的一个应用领域：首先分析了演化计算求解问题的一般思路和方法，把演化计算问题求解过程分为："设计基于群体的随机搜索机制"、"研究问题的性质并以此隐含地定义算法的搜索方向"和"求解过程的观察与控制"三个部分；然后分别找出各个部分中的关键概念，总结这些概念现有的一般实现方法，抽取其本质，以此结合设计模式来定义组件软件的接口；通过分析演化计算各个概念之间的相互联系来设计组件软件间通过接口的进行交互的方式；最后还在目前一种主流组件软件开发平台COM／DCOM（微软提出的组件对象模型）的基础上实现了常用的演化计算组件，如简单演化算法组件、稳态演化算法组件、演化算法组件、演化算法组件、种群组件、锦标赛选择策略组件、线性排名选择策略组件、非线性排名选择策略组件、随机数发生器组件等等。

Then, the minutiae sets are aligned globally through coordinate transform, and the alignment parameters are optimized by using affine transform and least square method. Finally, minutiae matching and directional field matching are respectively achieved based on the minutiae alignment, and the two matching scores are fused into a single to obtain a more reasonable result. Experimental results show that this method contributes to ensure the accuracy of fingerprint identification as well as possesses the real-time performance.

该算法首先利用脊线信息快速确定满足局部匹配要求的细节点对，在此基础上进一步通过全局坐标变换完成细节点的全局配准，并采用仿射变换模型通过最小二乘估计对配准参数进行优化，然后在配准的基础上分别进行细节点匹配和方向场匹配，最后对两种匹配分值进行融合，以取得较合理的匹配结果。

Some examples are given in this dissertation. First, the coordinate values of a group of discrete points on the cam profile are achieved by conventional design method which are then used as measured data of the cam profile. Then the kinematic analysis of the cam mechanism is performed by the method developed in this paper. The reverse results are compared to the theoretic values.

本文以已知从动件运动规律的凸轮机构为例，利用正设计方法求出凸轮实际廓线一组离散点坐标值，并以此作为凸轮检测数据，运用本文提出的分析方法进行运动反求，并将反求所得结果与理论结果加以分析比较。

The thoughts, theory and understanding from these materials are used to expound the natural and social phenomena of the human body, and get the conclusion that the qualitative analysis is sufficient,while the quantitative concepts are scanty; subjective experiences and clinical disproof theory are plentiful while concrete proof analysis and morphological injury principles are scarce.

自然哲学医学模式是以社会科学、社会现象和社会心理知识素材为主要工具，研究和认识人体健康与疾病状态，注重反映人的本质属性即社会属性，与生物-心理-社会医学模式比较，既有其自身系统性和完整性，更有其临床治疗理论及较强的可操作性。

Benjamin Disraeli You are your greatest enemy if you are a coward, but if you are brave, you are your greatest friend.

如果你是懦夫，你是自己最大的敌人；如果你是勇敢的人，你是自己最好的朋友。

In this article, firstly, the significance, features, conceptual development and implementary principles of recurrent education are expounded,and its economic value is illustrated in terms of its practicality and economic function; then the importance and properties of lifelong learning are analysed,and it is held that the distinguishment of and stress on recurrent education in the practice of lifelong education is the most essential and important means for the practical application of lifelong learning notions;lastly,the current situation of and obstacles to recurrent education are made clear and the implementary tactics and approaches are presented.

摘要］本文首先论述了回流教育的意义、特征、理念的发展以及实施原则，接着从回流教育的实用性及其经济功能来说明回流教育的经济价值；然后再论述终身学习的意义与特征，并从终身学习的实践途径中凸显回流教育的实施乃是实践终身学习理念最基础、最重要的途径。此外，文中也指明了目前实施回流教育的现况及阻力，提出了回流教育的实施策略与实施途径。

The synonyms, which are formed by monosyllable, are 26%, and the synonymas, which are formed by monosyllable or disyllabic word, and formed by disyllabic word, are 74%.

其中单音节和单音节构成同义词的只占总数的26％，也就是说单音词和双音词构成的同义关系和双音词之间构成同义关系的占到了74％。

With reference to the marked li words in the Modern Mandarin Dictionary, 2002 edition, this paper tries to gather up the basic features of the li words from their syllable structures, acceptation structures and internal structures. In syllable aspect, the polysyllable words are dominant. For example, the disyllable words are more than 22 times of the monosyllable words. In acceptation aspects, the multivocal words are less than monovocal words. And in internal structure aspect, the compositive words are much more than the single words.

本文以《现代汉语词典(2002年增补本)》中有标注的詈词为考察对象，从音节结构、词义架构、内部构造方面来考察，初步概括出了这类词的基本特征：从音节结构上看，詈词中多音词占绝对优势，仅双音词就是单音词的22倍强；在词义架构上，詈词以单义词为主，而多义词较少；从词的内部构成情况来看，詈词中合成词大大多于单纯词。

The plates are obtained by two steps: compound felt and hot pressing shaping. The opening, mixture, carding, net-paving and needling process that affect shaping process of the blending fiber needle felt are investigated. Then it is concluded that the fiber nets from the BC-272B carding machines are uniform when the rolling speeds of licker-in, cylinder, doffer roller of the roller carding machine are 900r/min, 850r/min and 15.6r/min separately. The fiber needle felt is in a good condition when the paving nets have 8 layers, the type of the felting needle is 30, the density of needling is 1800end/m2, and the depth of needling is 3mm.

纤维复合板材分混合制毡和热压成型两步完成，分别探讨了开松、混合、梳理、铺网、针刺各工序对纤维针刺毡成型的影响，得出BC-272B罗拉梳理机的刺辊转速900r／min、锡林转速850r／min、道夫转速15.6r／min时，从梳理机下来的纤网较为均匀；铺网层数为8层、刺针型号为30、植针密度1800枚／m~2、针刺深度为3mm时，纤维针刺毡的效果较好，纤维复合针刺毡单位面积重量为200g／m~2。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。