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optimism swap ecology charter horizon prototype uproar cereal orientation originate burner photoelectric subject compute forum racket glare flask infectious outlaw compile roundabout mercury amplitude pedal

发表于:2018-12-01 / 阅读(217) / 评论(0) 分类 用Mp3背六级单词

Studies that will be released today show that fish, birds and mammals in New England have significant amounts of mercury in their bodies. The studies find the toxic metal in some unexpected habitats and they suggest that power plants in the Midwest a

发表于:2018-12-17 / 阅读(252) / 评论(0) 分类 2009年NPR美国国家公共电台7月

The Mercury Mess By Samantha Levine / 2004, as first appeared in U.S. News nbsp; What are the dangers of mercury in fish? Can the mercury mess be cleaned up? 1 Are these fish safe to eat?” It’s a

发表于:2018-12-19 / 阅读(173) / 评论(0) 分类 彭蒙惠英语

-Leonard:Look, I need to get enter the laser lab. You're just gonna have to find someone else to take you home. 反正我要用激光实验室,你只能找别人送你回家了。 -Howard:Ah, damn, I picked the wrong side. 该死,我站错队了

发表于:2019-01-01 / 阅读(183) / 评论(0) 分类 生活大爆炸第二季

发表于:2019-01-03 / 阅读(166) / 评论(0) 分类 电信英语

WAN wide area network WARC World Administrative Radio Consortium WATS Wide-area telecommunications services. See Wide-area telecommunications services. Waveform amplitude (magnitude) versus time repre

发表于:2019-01-03 / 阅读(201) / 评论(0) 分类 电信英语

DCE data circuit terminating equipment DCP digital communications protocol DCS digital cross-connect system DDD direct distance dialing DDN Defense Data Network Digit L Digital L is another amplitude

发表于:2019-01-03 / 阅读(238) / 评论(0) 分类 电信英语

Abort - To stop doing something. Particularly, to exit a software program or stop receiving or sending a message. Access - (1) (verb) to get use of something, or (2) (noun) refers to a particular leve

发表于:2019-01-03 / 阅读(191) / 评论(0) 分类 电信英语

APCM Adaptive Pulse Code Modulation 自适应脉码调制 APCM是在PCM基础上,采用量化自适应,使均方量化误差最小的一种调制方法。 APD Avalanche Photo Diode 雪崩光电二极

发表于:2019-01-03 / 阅读(168) / 评论(0) 分类 电信英语

ASE Application Service Element 应用服务单元 ASE Amplified Spontaneous Emission 放大自发辐射 ASIC Application Specific Integrated Circuit 专用集成电路 ASF Advanced Streaming Format 高

发表于:2019-01-03 / 阅读(168) / 评论(0) 分类 电信英语

This is Scientific American's 60-Second Science. I'm Christopher Intagliata. Got a minute? Toss a piece of leaf onto a spider web. The spider is indifferent. Because leaves don't squirm like captured flies. But Australia's assassin bug turns the tabl

发表于:2019-01-08 / 阅读(300) / 评论(0) 分类 Scientific American(十一)月

President Obama's spending the last two days of his Asia tour in Japan, shoring up trade support at a regional summit after suffering a few setbacks. Earlier at the G20 meeting in Seoul, the president was unable to secure a free trade pact with South

发表于:2019-01-08 / 阅读(198) / 评论(0) 分类 2010年NPR美国国家公共电台11月

SCIENCE IN THE NEWS - Mercury in Fish / Life on Land / The Goldman Environmental Prize By Broadcast: Tuesday, May 11, 2004 (THEME) VOICE ONE: This is SCIENCE IN THE NEWS, in VOA Special English. I'm B

发表于:2019-01-30 / 阅读(294) / 评论(0) 分类 科技之光

The U.S. space agency(代理中介) has released the first ever image taken of the surface of Mercury from a spacecraft orbiting the planet. The black and white image, posted on the NASA website Tuesday, shows a surface pocked with craters of varying

发表于:2019-01-31 / 阅读(174) / 评论(0) 分类 英语新闻

along prep. 沿着ad. 向前走 解析:表示沿着或向前走,一般指沿着一个线性的方向 along with 与……一起 alongside prep. 在……旁边,并肩 alphabet n. 字母表,字母系统

发表于:2019-02-03 / 阅读(212) / 评论(0) 分类 英文语法词汇

The U.S. space agency NASAs Messenger probe(正直的,廉洁的 ) is scheduled to reach Mercury later this week, and become the first spacecraft to orbit the planet closest to the sun. During Messengers year-long orbital mission, scientists exp

发表于:2019-02-05 / 阅读(165) / 评论(0) 分类 英语新闻

The U.S. space probe MESSENGER is poised to enter orbit around Mercury(水银) early Friday, Universal time, capping a nearly seven-year journey to the solar systems innermost planet. Scientists with the U.S. space agency, NASA, hope the orbiting

发表于:2019-02-05 / 阅读(152) / 评论(0) 分类 英语新闻

By Paul Sisco Washington, DC 15 February 2008 Scientists have started analyzing data and images acquired when the Messenger space probe passed within 200 kilometers of the planet Mercury last month. It was the first flyby of the solar system's inner-

发表于:2019-02-06 / 阅读(224) / 评论(0) 分类 VOA常速英语2008年(二月)

Like Mercury, the earth takes a beating from the sun's violent temper. Flares, sun storms and other solar hissy fits can cause electronic mayhem for the satellites that roam above our heads. Fortunately, the earth is protected from this radiation by

发表于:2019-02-15 / 阅读(293) / 评论(0) 分类 自然百科2012年

A abbreviation,absorption,abstract,abundance,acceleration,acceptance, accessory,accommodation, accordance,acquaintance,acquirement,acquisition,adjustment,administration, admiration,admission, adoption

发表于:2019-02-18 / 阅读(179) / 评论(0) 分类 考研英语