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China GB Standards List

 GB/T 7509-1987  
Blank detail specification for microprocessor semiconductor integrated circuits

半导体集成电路微处理器空白详细规范 (可供认证用)
 GB/T 7515-1987  
Information processing--Coding of machine readable characters (MICR and OCR)

信息处理用机器可读字符编码 (磁墨水字符识别和光学字符识别的字符)
 GB/T 2625-1981  
process detection and controlflow chart--Symbols and letter codes

过程检测和控制流程图用图形符号和文字代号

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