单词：vacuum uv radiation scale
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This is Scientific American 60-Second Science. I'm Cynthia Graber. This will just take a minute. The fridge is one of your home's biggest energy hogs. Better insulation can make refrigerators much more efficient. And a panel encasing a vacuum is one
Scientific American(五)月
UV Rays Strip Small Galaxies of Star Stuff紫外线辐射会阻止小星系形成 The sun spews out ultraviolet radiationthat's why you put on sunscreen. But the sun isn't the only UV-producing celestial body. Stars and supermassive black holes produ
2017年Scientific American(三)月
A key Japanese adviser on radiation（放射 ） leaks at the country's disabled Fukushima nuclear power facility has quit in protest over the government's handling of the disaster. The adviser, Toshiso Kosako, a radiation safety expert at the Univer
英语新闻
NEW DELHI, March 16 (Xinhua) -- The Indian government has ordered food originating from（发源于） Japan to be tested for radiation in the wake of explosions at a Japanese nuclear plant following a devastating earthquake-tsunami last Friday, repo
英语新闻
WASHINGTON, March 30 (Xinhua) -- A trace amount of radioactive(辐射性的) iodine（碘） has been found in a sample of milk from the west state of Washington, the U.S. Environmental Protection Agency and the Food and Drug Administration (FDA) sai
英语新闻
As summer approaches we all enjoy outdoor activities. But with sunlight becoming more intense we should protect our skin from harmful direct exposure to the sun. 随着夏日的到来，我们都喜欢进行一些户外运动。但因为日照愈加强
中英双语新闻