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9 小时
上海微系统所在金刚石基氧化镓异质集成材料与器件领域取得突破性 ...
氧化镓在宽/超宽禁带半导体材料中热导率 (0.1-0.27 ...
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《科学》(20241213出版)一周论文导读
▲摘要:研究组绘制了1984年至2018年约290万条河流的日流量图,以评估全球河流系统的近期变化。结果发现,河流下游以流量显著减少为主,而河流源头流量显著增加的可能性是流量显著减少的1.7倍。这些变化导致大约29%的全球陆地表面经历了显著的上游径流变化。
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