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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。

A collating element is any single character, or any sequence of characters that collates as a single unit.

对照元素是任意的单个字符，或对应於某个单个单元的字符序列。

An optimization model for combinatorial double auction based on integer programming method is established and transformed into single-sided auction,which will benefit to solve combinatorial double auction with the method used for single-sided auction and to make the problem much more easier.

本文运用整数规划的方法建立了一个组合双向拍卖问题的一般化模型，并通过逐步转化，把组合双向拍卖简化为单边拍卖，有助于利用求解单边拍卖的方法来求解复杂的双向拍卖问题，使这一问题的研究得到了简化。

Appling gas chromatography method to determine single layer's output and water cut of commingle producing well enriches commingle production technology. This application not only can be used to determine single layer's output, but also water cut. This technology must play important role to develop Putaohua and Fuyu reservoir effectively.

气相色谱技术用来确定合采井分层产量、含水的应用技术丰富了葡扶合采技术，其应用不仅可以确定合采井分层产量，而且可以定性确定两套油层的含水，对研究两套油层的动用状况必将发挥重要作用。

Based on the concepts presented above, four types of new models are proposed:(1) a production system adopting single operational strategy and setting common buffer,(2) a production system adopting single operational strategy and not setting common buffer,(3) a tandem production system adopting hybrid operational strategies,(4) a supply chain adopting hybrid operational strategies.

所谓对称，是指在生产系统分解后，同一个搬运车既作为某个子系统的输出端，同时又作为另一些子系统的输入端。对称分解方法的难点在于，在子系统中，搬运车的服务过程不同于原来的服务过程。在子系统中，把原系统中的阻塞和空闲等待过程，模拟成虚拟的服务过程，所以需要计算阻塞和空闲等待时间。

This hereditary unit comprises a single complementation group, or in other words a single gene

这个遗传单位由一个互补群，也就是一个基因所组成。

Under the conditions of compatibility or sub-compatibility between a set-valued mapping and a single-valued mapping, the existence of cotnnlon fixed points for two set-valued mapping and a single-valued mapping in complete metric space is discussed.

在集值映象与单值映象相容或次相容的条件下，讨论了度量空间中两个集值映象和一个单位映象的公共不动点的存在性，改进和推广了一些相应结果。

Under the conditions of compatibility or sub-compatibility between a single-valued mapping and a set-valued mapping,a necessary and sufficient condition for set-valued mapping pair and single-valued mapping which have the common fixed point in complete convex metric space are given.

在单值映象与集值映象相容或次相容的条件下，给出了完备凸度量空间中集值映象对与单值映象存在公共不动点的一个充要条件，改进和推广了某些已知结果。

By using the transfer matrix of the beam propagation,the movement of the low-order nonlinear ghost image s was calculated when high-power Gaussian laser beam passes through the single convexo-convex lens,the single concavo-concave lens and the 4F system and then the movable rules were analyzed.

采用矩阵光学方法，计算了高功率高斯光束通过单个凸透镜、单个凹透镜及 4F系统时低阶非线性鬼像的移动，并分析了其移动规

First, Kierkegaard defined the single individual as inwardness, which means the existential reality of the single individual is manifested in his concern for himself, and constituted by his relation with himself. Second, the main element of concern for or relation with oneself is one's passion, rather than reason.

这种与自己的关系构成了单个的人的实在性；其次，这种关切关系的特点首要地是一种激情，而并非首要地是理智。

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。