实现

Proposed own through oneself to the encryption algorithm study research regarding the encryption algorithm improvement thought:Along with the rapid development of computer technology, Even using the exhaustive methods to pay only a smaller price can be completed within a few days break request.

加密算法的实际应用：利用汇编语言实现DES加密、DES算法的VLSI实现、FPGA上的DES算法实现。

The system , according to the approach and method of the software engineering on geography information system ,is under scientific system analysis and design combining with Duoluokou Market Information System's self-characteristic and is based on Ajax. Ruby on Rails framework will be applied to manage the date information. Such framework provide several ways to record data information and organize them in an efficient way and to do management, update, maintenance on them; Date information are visible that means the framework provide some operating function on map such as maximum, minimum and brose, user can use the button above the map to imply those function; Information query and brose, a corresponding entity will be offered according to the input terms and its location in the map.

系统按照地理信息系统软件工程的思路与方法，结合舵落口大市场信息化建设的自身特点，对其进行科学的系统分析与设计，并以Ajax技术为基础，利用Rails框架实现了数据信息管理，即运用多种方式录入数据信息，以有效的数据组织形式进行数据库管理、更新、维护；实现了信息查询与浏览，即提供根据输入的条件查询其对应的实体的相关属性；实现了数据信息可视化，即提供了放大、缩小、漫游等基本地图操作功能，用户可以利用地图上方按钮来方便的使用这些功能以及在地图中定位与显示所查询的目标物。

The possibility to realize a heavy set weight spinning process by use of traditional carding machine is discussed in this article.

探讨了在普通梳棉机上实现重定量纺纱工艺的可能性，认为从产量、质量两方面考虑，为实现重定量纺纱，必须对普通梳棉机进行部分调整，而且高效工艺必须与传统工艺相结合，企业的精细化管理是实现高效工艺的基础。

On plane carrier, the left hand MTL realizes series capacity and shunt inductance directly with features of compact structure, easy of manufacture, small size, low loss, and capability of applicable to microstrip IC. The MTL possesses symmetric structure, multiple adjustable parameters so as to suit requirements by different performances and different applications easily.

本发明的左手传输线在平面载体上直接实现了串联电容和并联电感，结构紧凑，易于加工，体积小，损耗低，能够直接应用于微带集成电路；且具有对称结构，可调参数多，可以容易地实现工作频带的调节以适合不同性能要求，实现不同应用。

Arranging two motors above shaker basket can be made to balanced elliptical track, and achieved a point with the center of force and mass of the basket by adjusting angle of weight.

将电机放置在筛箱的上面可以实现椭圆轨迹，且通过调节上下偏心块的夹角，可以实现力心和筛箱质心的重合，从而实现平动椭圆振动轨迹。

In May 1957, in the New Democratic Youth League to convene the Third National Congress, upon the approval of the CPC Central Committee, the Assembly decided to renamed the New Democratic Youth League of China Communist Youth League. Since then, the Chinese Communist Youth League to follow the party embarked on to explore China's own twists and turns of the road of building socialism.

共青团将团结带领全国亿万青年投身全面建设小康社会的伟大实践，为实现我们党推进现代化建设，实现社会统一，维护世界和平和促进共同发展的三大历史任务，在中国特色社会主义道路上实现中华民族伟大复兴而奋斗。

Later, it makes some comparison with four kinds of modulation technique, and finally, it implements the three-level PWM switching power amplifier with the PWM technique. The power of the amplifier is 2kVA, and the frequency bandwidth is 10～3kHz. In the thesis, the author designs and makes the hardwares of the switching power amplifier. The hardwares contain power inverter rank circuit, control system circuit based on DSP, drive and isolation circuit, and protective circuit. The thesis also analyses the potential safety problems and put forward some solutions for the problems. Furthermore, the thesis accomplishes the software design of the control system, and successfully debugs it. The methods of designing higher power ampilfier are also discussed in the thesis. It analyses the feasibility of the methods, outlines the way of how to design higher power switching power amplifier, and does some experiments with the method of switches-parallelling.

根据电动振动试验系统对开关功放的要求，提出了以电感电流瞬时值控制技术为基础的三电平脉宽调制开关功放的设计方案，并通过系统仿真进行了原理性论证；然后设计并制作了开关功放的硬件，包括功率转换电路，基于DSP的控制电路，驱动、隔离电路以及保护电路；针对开关功放数学模型不易得出的特点，细致分析了模糊自适应PID控制方法，在此基础上编写了控制程序；研制出一台功率为2kVA，通频带为10～3kHz的三电平脉宽调制开关功放；论文中还探讨了实现大功率开关功放的方法，分析了各种方法的可行性，给出了实现大功率开关功放的思路，并进行了并联开关管实现大功率开关功放的实验。

Thus, evaluation of the minimum zone circle could be solved effectively.Three methods of assessment of roundness error were proposed in this dissertation. Based on the criteria of the minimum zone circle, minimum circumscribed circle and maximum inscribed circle and convex hull, a unified approach was proposed to evaluate roundness error of the minimum zone circle, minimum circumscribed circle and maximum inscribed circle. Evaluation of the minimum zone circle, minimum circumscribed circle and maximum inscribed circle was fulfilled with rotation based the contact pattern. The minimum circumscribed circle and maximum inscribed circle were evaluated with curvature and the curvature circle.

本文提出了三种圆度误差评定的方法：根据最小区域圆、最小外接圆、最大内接圆在极坐标系下的判别准则，利用计算几何中的凸壳理论，提出了一种统一的评定方法，实现了对最小区域圆、最小外接圆、最大内接圆的误差评定；基于接触斑点的检验原理，利用旋转法，实现了最小区域圆、最小外接圆和最大内接圆的误差评定；利用曲率和曲率圆，实现了对最小外接圆和最大内接圆的误差评定。

This article detailedly expatiated upon the principles, contents and methods of cropland classification; it analyzed the necessity to combine the work of cropland classification with GIS technology, summarized the attributions of ARC/INFOand some other related softwares; it established the technologic route of cropland classification supported by GIS, by a case study in Liwu Town,Li County Hebei Province, this article expatiated the practicable mechanism of combining the function of ARC/INFO with the work of cropland classification, and put forward some new ideas and approaches of utilizing GIS: this paper put forward the idea of coding the polygons in the basic graphic database such as soil map and land use map according to their attributes, and put forward the detailed coding project; based on the code databases, it expatiated upon the detailed approaches to create single梖actor map and output the final classification map; it put forward the principles and the method of creating classification units in the environment of GIS, that is how to keep the lines of soil polygon, the border of districts and the important objects such as residential areas, banks of rivers and roads ,and how to overlap single梖actor soil map and land use map, and to delete some vector lines of the overlapped map appropriately; it detailed the methods of creating mathematic model of classification coefficients in the environment of computer, and used FOXPRO6.0 programs to realize the automation of calculating coefficients; it represented the method of plotting the final map by overlapping various coverages according to the code tables and lookup tables, the process of outputting the cropland classifying map was finished by program.

本文法对耕地等别划分的原则、内容及方法作了较详细的阐述，介绍了多系数综合修正法的耕地等别计算方法及其具体应用和AHP的确权方法；分析了耕地等别划分工作与地理信息系统技术相结合的必要性，简要介绍了地理信息系统软件ARC／INFO及其他相关软件的功能特点，制定了地理信息系统支持下耕地等别划分的技术路线，通过对河北省蠡县蠡吾镇的实证研究，重点阐述了ARC／INFO及相关数据库软件与耕地等别划分结合的有效机制及GIS应用的一些新思想、新方法：提山了对土壤图和土地利用现状图等基础图形数据库进行特征编码的思想和具体的编码方案，阐述了基于与图形库相链接的特征编码表，单因素图提取、成果图的输出的具体实现方法；提出了GIS环境下耕地单元划分的原则和方法，即在保留土壤因素图斑界线、行政界线和重要地物等的原则下，将土壤单因素图和土地利用现状图进行拓扑叠加，对叠加图中的矢量线进行适当的删除；阐述了在计算机环境下，耕地分等参数计算模型建立的方法，并用FOXPRO6.0语言程序实现了参数计算的自动化；阐述了根据图形库特征编码表和建立绘图符号查找表，按不同图层叠加绘制成果图的方法，该过程用命令程序实现耕地等别图的输出。

The author has initiated that ecological culture concepts should be integrated in a deeper level in hillside architectural design originality, both should reflect hillside green architectural morphology art expression characteristic based on the narrow strategies, as well as realize the integration of morphological esthetics and the ecological esthetics to manifest the combining of hillside architecture and hillside environment, and should realize the conformity with the humanities ecology based on the generalized strategies originated from local environment, to reflect the regional difference and nationality's particularity , and to manifest the harmony aesthetic value close connected between hillside architecture and the regional social environment, the cultural environment so as to realize hillside architectural significance finally.

作者倡导坡地建筑设计创意中的生态文化理念需在更深层次上进行整合，既要基于狭义的缘地策略反映坡地绿色建筑形态艺术表达的特性、以及实现形态美学和生态美学的整合，体现出坡地建筑与自然环境的合二为一，又要基于广义的缘地策略实现与人文生态的整合，反映地域的差异性和民族的特殊性，体现出坡地建筑与地域的社会环境、文化环境密切关联的和谐美，以最终实现坡地建筑的意义。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。