国家标准 (國家標準) guójiā biāozhǔn

guójiā biāozhǔn noun National Standard
Domain: Modern Chinese 现代汉语 , Subdomain: Technology
Notes: Used as a prefix for Mainland national standards, eg GB2312, the standard for the official national character set

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美国国家标准学会国家标准化管理委员会国家标准码