单词：grid-controlled mercury-arc rectifier
单词：grid-controlled mercury-arc rectifier 相关文章
Several years ago, Iris Arc Crystal, a company I co-founded with Francesca Patruno, experienced a 1)lull in business. We had recently hired several new employees and hoped that the 2)slowdown was only
疯狂英语2001年
Archaeology is a source of history, not just a bumble auxiliary discipline. Archaeological data are historical documents in their own right, not mere illustrations to written texts, Just as much as an
新东方背诵文选
VOICE ONE: This is SCIENCE IN THE NEWS, in VOA Special English. I'm Doug Johnson. VOICE TWO: And I'm Mario Ritter. Today, we will tell about the two thousand nine Nobel Prizes for discoveries in science. We also will tell about progress against acqui
VOA慢速英语2009年（十二）月
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
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
彭蒙惠英语
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英语说遍全球文化
Several years ago, Iris Arc Crystal, a company I co-founded with Francesca Patruno, experienced a 1)lull in business. We had recently hired several new employees and hoped that the 2)slowdown was only temporary. However, in the meantime, we had work
精美英文欣赏
Mind-Controlled Prosthetics Are Getting Closer Scientists and engineers are making substantial advances towards the ultimate goal in prosthetics creation of limbs that can be controlled by the wearers mind. Thanks to sophisticated sensors capable of
VOA标准英语2015年(五月)
SCIENCE IN THE NEWS -July 2, 2002: Space Shuttle Flights Halted / Researchers Study Icelanders' Genes / Another Reason to Eat Green, Leafy Vegetables Broadcast: July 2, 2002 VOICE ONE: This is Steve E
科技之光
SCIENCE IN THE NEWS -May 21, 2002: First electronically controlled animals / Study of mothers and their sons / Effects of global warming Broadcast: VOICE ONE: This is Sarah Long. VOICE TWO: And this i
科技之光
BOB DOUGHTY: This is SCIENCE IN THE NEWS in VOA Special English. Im Bob Doughty. FAITH LAPIDUS: And Im Faith Lapidus. Today we tell about the latest research and treatments for Parkinsons disease. (MUSIC)BOB DOUGHTY: Parkinsons is a disease of the ce
2010年VOA慢速英语(十一)月
SCOTT SIMON, HOST: Joan of Arc has become such an emblematic figure - a saint of the Catholic Church, the inspiration of so many novels and films and, of course, George Bernard Shaw's iconic play. We might sometimes forget she was a real teenage girl
2018年NPR美国国家公共电台10月
唐顿庄园第一季第四集_2 [INT. KITCHENS - DAY] ANNA Ugh. MRS PATMORE You've got a cold, I want you out of here. MRS HUGHES Anna, there you are. You know I'm out tonight, because I don't want to come home to any surprises. MRS PATMORE (laughs)
唐顿庄园第一季
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
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
英语新闻
英文歌词: Car crashes, TV shows A drunkard on the side of the road People running (running) Fantasy or reality Analysis and theories What does matter really? Tell me what to believe Won't you bring me order Tell me what to achieve Baby, so I can mov
音乐咖啡厅
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
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
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-
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
自然百科2012年