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 Christopher Intagliata. Got a minute?
该句暂无译文！
2 .Unless you have a pair of noise-canceling headphones, flying can be annoying to the ears.
该句暂无译文！
3 .A lot of low-pitched rumbling makes it into the cabin.
该句暂无译文！
4 .Problem is, the wings, floors, ceilings and bulkheads are lined with a lightweight material with a honeycomb structure, which adds structural integrity to the aircraft, but engine and airflow sound cuts right through.
该句暂无译文！
5 ."The physical law says that the lighter the material is, the worse it can block sound."
该句暂无译文！
6 .Yun Jing is an acoustician at North Carolina State University.
该句暂无译文！
7 .In a quest for quiet, he and his colleagues constructed a similar material,
该句暂无译文！
8 .but with a quarter-millimeter thin layer of latex stretched across the cells of the honeycomb.
该句暂无译文！
9 .In tests, the latex-laced structure cut the intensity of low-frequency rumbling to a thousandth of its previous level, enough, he says, to make an airplane cabin sound more like a peaceful living room.
该句暂无译文！
10 .The study is in the journal Applied Physics Letters.
该句暂无译文！
11 .Problem is, the material Jing developed is six percent heavier than the standard stuff.
该句暂无译文！
12 .And more weight means more fuel means more expense.
该句暂无译文！
13 .But if we settled for a slightly quieter flight, Jing says he could use less latex, making the noise-blocking honeycomb just a few percent heavier.
该句暂无译文！
14 .Considering that the honeycomb is already one of the lightest parts of an airplane, you're then looking at only a modest plane weight gain.
该句暂无译文！
15 .Of course, that's assuming everyone wants a quieter plane.
该句暂无译文！
16 ."Some people say they actually want to hear the sound of the engine.
该句暂无译文！
17 .They don't want the cabin to be too quiet.
该句暂无译文！
18 .They want to make sure the plane is still flying."
该句暂无译文！
19 .Sounds like you'll need those expensive headphones a little while longer.
该句暂无译文！
20 .Thanks for the minute, for Scientific American 60-Second Science. I'm Christopher Intagliata.
该句暂无译文！
21 .
该句暂无译文！