摆锤式角位移感测器

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

And lastly, here's Destin, from Smarter Every Day, 最后是《每天聪明一点点》的德斯丁, talking about the conservation of angular momentum, and, since it's YouTube, cats: 为我们讲述动量守恒,由于是在YouTube上,所以他用

发表于:2018-12-30 / 阅读(56) / 评论(0) 分类 TED演讲科技篇

The elephant is the largest of quadrupeds; 大象是四蹄动物当中最大的; his height is from eight to fourteen feet, and his length, from ten to fifteen feet. 高八到十四英尺,长十到十五英尺。 His form is that of a hog; his ey

发表于:2019-01-17 / 阅读(36) / 评论(0) 分类 美国语文第四册

Bringing a giraffe into the world is a tall order. A baby giraffe falls 10 feet from its mother' s womb and usually lands on its back. Within seconds it rolls over and tucks its legs under its body. From this position it considers the world for the f

发表于:2019-02-19 / 阅读(36) / 评论(0) 分类 英语美文

Come down, come down! yelled the seamen to Daggoo, 下来,下来!水手们都对大个儿高声叫嚷, but with one hand holding on to the heavy tackles, so that if the head should drop, he would still remain suspended; 他一只手抓住那只大

发表于:2019-03-10 / 阅读(92) / 评论(0) 分类 白鲸记
学英语单词
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airflow resistance
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All hallow
allergic gingivitis
amar-
amino-lipoid
amphigastrula
apocope
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Arctoa
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COLM(colchicinamide)
complex display
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core print
cream slice
cytochrome P450 gene
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dead beat metre
distribution pump
ear crystal
ebonite
enlarged image
err from
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intel 80286
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leave the land uncultivated
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