Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.Title新型数字基础设施如何影响对外贸易升级--来自中国地级及以上城市的经验证据Authors钞小静; 薛志欣; 孙艺鸣PublicationEconomic Science / Jingji Kexue, 2020, Vol 42, Issue 3, p46ISSN1002-5839Publication typeArticleDOI10.12088/PKU.jjkx.2020.03.04