图纸内容还应包括材料部件编号，间隙公差，表面机械加工符号，热处理信息，表面保护，材料重量，以及其他的必要内容。
Drawings will also include the material part Numbers, tolerances clearances, surface machining symbols, heat treatment information, surface protection, material weight and other necessary information.
多种符号的使用使赋予一张图纸以大量信息成为可能。
Using many symbols makes it impossible to put a large amount of information on a single map.
基于径向基概率神经网络，提出一种扫描工程图纸图像分割后的图形符号识别方法。
A novel graphic symbol recognition approach of engineering drawings based on radial basis probabilistic neural networks (RBPNN) is proposed.
提出一种统计识别与结构识别相结合的符号识别方法，以识别工程图纸中的各种符号，并达到了很好的识别效果。
A statistic and structure integrated approach for recognizing all kinds of symbols on engineering drawing is presented. It achieves a good recognition result.
工程图纸中电气符号的自动识别是实现电气工程图纸矢量化的基础。
The automatic recognition of electro-symbol is the base of engineering drawing vectorization.
清晰：技术文件的图纸、曲线、文字、符号等均应清晰、明确、易读、不得模糊。
Clear: All the drawings, lines, language notes, signs, etc. used in the technical documentations are clear and easy to read.
每一副十字绣图纸上都有以符号或者色标记的线标，不同的线标代表不同的绣线。
Each pair of cross-stinch drawings have to sign or color mark line, different line represents different enmbroindery thread.
每一副十字绣图纸上都有以符号或者色标记的线标，不同的线标代表不同的绣线。
Each pair of cross-stinch drawings have to sign or color mark line, different line represents different enmbroindery thread.
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