射流测风仪

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Real-time information about whats happening in our bodies at the cellular level could be crucial for fighting cancer and other life-threatening conditi

发表于:2018-12-24 / 阅读(62) / 评论(0) 分类 Scientific American(十二)月

One of the most exquisite heat sensors in the worldits not in some government lab. It's in the head of a snake. The pit viper, to be specific. They're incredibly sensitive. They beat any of the synthetic counterparts, even the most expensive semicond

发表于:2018-12-24 / 阅读(53) / 评论(0) 分类 2017年Scientific American(二)月

1. President Bush is slated to address the nation at 9 pm Eastern time Wednesday. On the agenda, his new approach for the war in Iraq which will reportedly include a surge of 20,000 US troops in the war-torn country. 2. Officials are probing the sou

发表于:2019-01-08 / 阅读(112) / 评论(0) 分类 美联社新闻一分钟2007

Scientists Aim to Boost Efficiency of Wind Farms 科学家致力于提高风力发电的效率 Modern wind turbines usually operate in groups or so-called wind farms, some of them with more than 100 turbines. But the air turbulence they create decrea

发表于:2019-01-14 / 阅读(50) / 评论(0) 分类 VOA标准英语2015年(三月)

Wind Farmers Go To School On Fish Designing wind farms with close packing of turbines, based on schooling fish, could greatly increase efficiency, say researchers at a meeting of the Division of Fluid Dynamics of the American Physical Society. Cynthi

发表于:2019-01-30 / 阅读(95) / 评论(0) 分类 60秒科学

Wind It Up 歌手:Gwen Stefani 专辑:The Sweet Escape Gwen Stefani - Wind It Up High on a hill was a lonely goatherd, lay-od-lay-od-lay-he-hoo Yodell back with the girl and goatherd, lay-od-lay-od-low Wind it up Wind it up, uh, uh, uh, uh Yodell

发表于:2019-02-04 / 阅读(65) / 评论(0) 分类 好听的英文歌曲
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