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The title and bill of material in engineering drawings are important data source for product data integrated management. In order to reuse the CAD data, the paper presents an effective method for extracting part information from existing engineering drawings. Through analyzing the format of title and bill of material, several shape-position characteristics of tables are summed up from the view of macro-layout and microstructure. A new method to automatically extracting drawing information based on cell-grid and feature-point is proposed along with its algorithm principle and implementation steps. A software package based on the method mentioned above is developed and used in practice.

1引言工程图是工程设计的主要成果和制造加工的主要依据，CAD软件的广泛应用使得传统上对于纸质图纸的管理模式转变为对大量电子文件的管理模式·由于文件系统在实际应用中不能适应复杂大规模的管理模式，已经出现了各种各样的图档管理系统[1]·工程图中包含的零件信息在表现形式上体现纸格式的标准化为批量提取数据提供了可能性·作为计算机处理的对象，图纸信息自动识别成为数据管理和系统集成的一项关键技术·当前CAD管理系统所处理的数据对象比较复杂，面临由不同企业使用不同的绘图软件生成的图纸，其中的标题栏和明细栏或者由软件自动生

Beneath the optimization of the forging process layout the attainable precision also depends on the accuracy of toolmaking and process control.

下方的优化锻造工艺布局该达到的精度还取决于对精度的模具生产和过程控制。

The layout is suited to three topographic terraces of the continent of China.

布局适合地形梯田的三个大陆中。

This paper sets forth representative layout of urban road network and its shortcomings. Based on topological structure index, different road networks are researched for network performance of anti-earthquake damage.

论文阐述了我国城市道路网路典型布局及其存在的主要问题，基于拓扑结构指数，研究了不同路网结构地震抗毁能力的差异。

Based on these researches,a full theoretical method is established, which is an applicable to determine all possible STPR mechanisms of anyone usable topological limb.Finally,this family of STPR mechanisms is determined one by one.Each mechanism in the family is depicted by means of the type of its topological limb,the actuated layout,and the structure parameter.

基于这些工作，形成一套完整的理论方法，用来确定任何一种可用分支拓扑组成的所有可能的STPR机构，一类STPR机构最终逐个被确定，每个机构都可以根据其分支拓扑类型、驱动布局类型和结构参数给以唯一的描述。

We can identify the geospatial information through administrative layout, natural geographic region, reference framework, toponym, address and some kinds of number, such as postal code and telephone number.

这些部门根据各自的需求来收集、保存、更新和维护属于自己范围内的数据，这样就造成了各个部门的信息系统的分布性、异构性和多源性。

When the layout of the structure has been determined and the local strength requirement satisfied, an optimum method is used to meet the longitudinal and torsional strength requirements for container ship.

在上面的智能系统推理出中剖面结构布置以及满足局部强度的构件尺寸后，本文应用优化方法来满足总纵强度和扭转强度等约束。

In this design, it designs the whole layout and the transmission scheme, and distributes the transmission ratio.

在设计过程中，对整个试验台的总布置以及传动方案进行选择，并对传动系的传动比进行分配。

Computing of railway transportation capacity is an important basis to layout route network and evaluate transportation capacity of route network.

铁路线路运输能力的计算是进行路网规划、评价路网运输能力的重要依据。

However, in the layout, program flexibility and productivity, there is the phenomenon of alternating transposition.

然而，在版式、程式灵活性与生产效率方面，存在着交替换位现象。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。