本报北京2月25日电 （记者谷业凯）国家知识产权局数据显示：我国国内有效发明专利达532万件，成为世界上首个国内有效发明专利数量突破500万件的国家。“十四五”时期，我国国内有效发明专利数量持续增长，每万人口高价值发明专利拥有量达16件。截至2025年，我国发明专利申请量已连续多年位居全球第一，成为名副其实的专利大国。
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Descending into the windowless basement of a second world war air-raid bunker built for civilians in central Berlin is arguably an eerie enough evocation of what it means to endure life in a conflict.。关于这个话题，爱思助手下载最新版本提供了深入分析
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For the last four years, archaeologists have been excavating the site in the grounds of Fonmon Castle, close to the end of the runway at Cardiff airport.