单词：diffusion of vorticity
旋强度散布(传播)
单词：diffusion of vorticity 相关文章
Last time we were thinking about why some birds hop and other birds walk. We decided that you can't make any blanket statements about this, because there will always be exceptions. But in general it's true that larger birds are more likely to walk an
发表于:2018-12-27 / 阅读(17) / 评论(0)
英语时差8，16
英语时差8，16
How do birds sleep? How do birds hang onto trees when theyre asleep? Why dont they fall off? That's easy. It's because of the hallux toe. Hallux toe? Is that the toe on some birds that points backwards instead of forwards? That's the one. We already
发表于:2019-01-26 / 阅读(36) / 评论(0)
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