单词:radiation tyep electric supply
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Part I A. key words:invent vocabulary:fax/ calendar/ puppet Mercedes-Benz 1.People in England made the first computer. It was built in 1943. It was made to help England understand secret messages during World War two. 2.Someone in Australia invented
Electric Fish 发电鱼 One way that Harold Zakon and his team find fish to study is to put electrical detectors into the bottom of murky streams in Venezuela. This works because certain fish emit pulses of electricity. Discover electric fish -- on tod
诸多线索综合起来为我们描绘出一幅画面:那是火星遥远的过去,那时的火星还有着一层厚厚的大气层,令这颗星球温热暖和,从而使水能够在火星表面流淌。但如今,地表的水消失不见,而
Doctors use X-rays to view internal organs, obtain clear images of possible disease and to treat cancer. For years radiation has been used to save lives, but there is growing concern that some patients are getting more than they ask for when they und
The operator of Japan's crippled Fukushima nuclear plant is reporting around 300 tonnes of highly contaminated water has leaked from a storage tank. Masayuki Ono is the general manager of the Tokyo Electric Power Company. He says the puddle that has
This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Animals rely on all sorts of cues to find their next meal. Monkeys and birds are attracted to the colors of ripe fruits and berries. And snakes find thei
Unit 12 Transportation (II) Part I Warming up A. 1. Running two new express bus routes especially for the company's employees 2. Subsidizing the cost of bus fares and monthly passes 3. Encouraging carpooling 4. A guaranteed ride-home program A. Tapes
Human exploration of Mars is now an official goal of the National Aeronautics and Space Administration (NASA). Last month, U.S. President Donald Trump signed a bill to increase NASAs budget. The law sets spending at $19.5 billion for the 12-month per
By Anjana Pasricha New Delhi 14 March 2006 Villagers walk past a Nepalese army armored vehicle at Khanikhola, Nepal, Tuesday, March 14, 2006 In Nepal, a transport blockade called by Maoist rebels has
China sees steady power supply in September BEIJING, Oct. 13 (Xinhua) -- China's power supplies remained steady in September, statistics from the State Electricity Regulatory Commission (SERC) showed. Power plants generated 394.5 billion kilowatt-hou
The clues are adding up to give a picture of a distant Martian past, when the planet had a thick atmosphere that was warm enough for water to stream on the surface. But now the waters gone, and the atmosphere is so thin that any water would boil away
U.S. health experts monitoring Japan's nuclear crisis are seeking to explain health risks from radiation(放射) exposure, while cautioning that radiation levels measured this week at the Fukushima-Daiichi power plant in northern Japan have not y
DOUG JOHNSON: This is SCIENCE IN THE NEWS, in VOA Special English. I'm Doug Johnson. FAITH LAPIDUS: And I'm Faith Lapidus. Today, we will tell about skin cancer. (MUSIC) DOUG JOHNSON: Skin cancer is one of the most common forms of cancer. It is also
By Caty Weaver IN THE NEWS -June 15, 2002: Bush Proposes New Security Department This is Steve Ember with the VOA Special English program IN THE NEWS. President Bush has proposed creating a new federa
物理学 statics 静力学 motion 运动 inertia 惯性 gravitation 引力 relativity 相对 gravity 地心引力 vibration 震动 medium (media) 媒质 frequency 频率 wavelength 波长 pitch 音高 intensity 强度 echo 回声 resonance 回声,洪
The World Health Organization (WHO) warns against the indiscriminate(任意的无差别的) use of potassium iodide as a precaution against nuclear radiation. WHO is issuing this advisory following reports of people in Japan and elsewhere who are usi
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
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
Government officials in Japan say it could take months for radiation(放射辐射) leaks to be brought under control at the Fukushima Daiichi nuclear power plant. The Fukushima Daiichi plant continues to spew radioactive water into the Pacific Ocean
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