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中国专利申请总数八年第一，各国专利申请数排行榜(1980-2018)
注意：这仅是专利申请总数 数据源：WIPO（WIPO.int） BGM：[No Copyright Music] Warrior women - (Royalty Free Epic Music) YouTube@Royalty Free Zone - No Copyright
其他｜OTHER1/10
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