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ICS01.080.20A22中华人民共和国国家标准GB/T31015—2014公共信息导向系统基于无障碍需求的设计与设置原则Publicinformationguidancesystems—Designandsettingprinciplesfortheconsiderationofaccessibleneeds2014-09-03发布2015-02-01实施中华...
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