煙圈
烟圈[1]是指烟雾在大气中形成的人類肉眼可见的涡环。吸烟者可能会有意或无意地从嘴里吹出烟圈[2]。在特殊条件下,一些火山口也会产生巨大的可见的烟圈,例如埃特納火山就會產生煙圈。 [3][4]
可以產生煙圈的火山和地點
编辑参考文献
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- ^ Mt Redoubt Blowing Smoke Rings. August 30, 2009 [2024-04-07]. (原始内容存档于2017-02-03) –通过Flickr.
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