原文已被隐藏，你可用 快捷键 - 或点击 显示原文 按钮来查看原文
第1段
1 .This is Scientific American 60-Second Science. I'm Sophie Bushwick. Got a minute?
该句暂无译文！
2 .Owls are nearly noiseless hunters, swooping down on prey without any warning whoosh.
该句暂无译文！
3 .How do they do it?
该句暂无译文！
4 .We've known that the leading edge of an owl's wing has a comb of stiff feathers.
该句暂无译文！
5 .And the trailing edge has a flexible fringe, unlike the rigid trailing edge of a conventional bird wing.
该句暂无译文！
6 .These two features contribute to a structure that produces almost no noise as it rushes through the air.
该句暂无译文！
7 .Now it appears that these predators have a third trick up their sleeves. or rather, wings, that allow them to be so silent but deadly.
该句暂无译文！
8 .Researchers modeled the effect of the layer of down on the wing's top surface.
该句暂无译文！
9 .And it looks like that fluffy stuff absorbs sound too.
该句暂无译文！
10 .The work was presented at a meeting of the American Physical Society's Division of Fluid Dynamics.
该句暂无译文！
11 .Mimicking owl wing down may lead to new sound-proofing materials.
该句暂无译文！
12 .Down and the other silencing features could inspire wind turbines and plane engines that produce less noise and fewer vibrations.
该句暂无译文！
13 .So that all we hear is.
该句暂无译文！
14 .Thanks for the minute, for Scientific American 60-Second Science. I'm Sophie Bushwick.
该句暂无译文！