Unverified50% confidenceFactExact time
氦气在大气中含量仅约0.0005%，属于不可再生资源，美国、卡塔尔、俄罗斯、阿尔及利亚控制了全球逾80%的储量
1
Sources
50%
Confidence
Long-term
Relevance
7/17/2026
First Seen
Sources
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