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SSS 2008-05-12

时间:2010-05-14 01:11来源:互联网 提供网友:0922013129   字体: [ ]
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    (单词翻译:双击或拖选)

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This'll just take a minute.

Olive oil producers generally guess the best time to harvest their olives by
checking the fruit’s color. The olive has to hit that perfect spot where they’ve just turned ripe—purple to black—but aren’t yet falling to the ground. Now, scientists at Israel’s Ben-Gurion University are helping1 them out with nuclear magnetic resonance2, also known as NMR. NMR is usually used medically to create images or measure a specimen’s levels of proteins and fat.  But this is the first time it’s being used industrially. Researchers first take digital photos of olives at different levels of ripeness. Then they put the olives in the NMR machine. Within a few seconds it determines the olives’ oil content. Combing the photos with the oil information allows scientists to create a database correlating peak oil with perfect color. A farmer in the field could take pictures of his crop. A special camera would average the olives’ color and tell him the optimal3 time to harvest. In a test, a local farmer learned that if he had harvested his crop 10 days earlier, he could have gotten 25 percent more olive oil.

Thanks for the minute. For Scientific American's 60-Second Science, I'm Cynthia Graber.


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1 helping 2rGzDc     
n.食物的一份&adj.帮助人的,辅助的
参考例句:
  • The poor children regularly pony up for a second helping of my hamburger. 那些可怜的孩子们总是要求我把我的汉堡包再给他们一份。
  • By doing this, they may at times be helping to restore competition. 这样一来, 他在某些时候,有助于竞争的加强。
2 resonance hBazC     
n.洪亮;共鸣;共振
参考例句:
  • Playing the piano sets up resonance in those glass ornaments.一弹钢琴那些玻璃饰物就会产生共振。
  • The areas under the two resonance envelopes are unequal.两个共振峰下面的面积是不相等的。
3 optimal zmDzhM     
adj.最适宜的;最理想的;最令人满意的
参考例句:
  • What is the optimal mix of private and public property rights in natural resources?私人和国家的自然资源产权的最适宜的组合是什么?
  • Optimal path planning is a key link for the sailing contest.帆船最优行驶路径规划是帆船比赛取胜的关键环节。
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TAG标签:   SSS  industrially
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