单词：plasma arc machining
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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
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By Leta Hong Fincher Washington 29 November 2007 A team of U.S. and British researchers have unveiled a new map of Antarctica that they say will revolutionize research on the frozen continent and contribute to a deeper understanding of climate change
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Universal Instrument traces its roots to the Universal Instruments and Metal Company, a safety pin manufacturer founded in 1919. Through time, the company discontinued safety pin production and made a transition to a machining and tool and die busine
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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
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金属切削 metal cutting 机床 machine tool 金属工艺学 technology of metals 刀具 cutter 电路 circuit 半导体元件 semiconductor element 反馈 feedback 发生器 generator 直流电源
英文语法词汇
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
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By David McAlary Washington 21 November 2006 The United States and more than 30 other nations have signed a $13 - billion agreement to develop a form of nuclear power in a process called fusion. In a Paris signing ceremony, they agreed to cooperate
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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
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By Steve Herman New Delhi 05 June 2008 The 15th summit of the South Asian Association for Regional Cooperation (SAARC) is scheduled to be held in less than two months, in the Sri Lankan capital. The government there is reassuring member countries it
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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)
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BEIJING, Dec. 11 (Xinhua) -- China is faced with severe challenges in collecting enough blood plasma to produce medicines, Health Minister Chen Zhu said Sunday. Chen called on the public to join blood donation after donating blood plasma at the Beiji
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Listen to the statements and check the correct answers. 1.Is sweeping out the tiny dust bothering you a lot? From now on if you have this machine, doing the housework will become a very easy job. This is a portable vacuum cleaner. lt's light and wire
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CHENGDU, May 5 (Xinhua) -- Chinese Health Minister Chen Zhu donated plasma on Saturday in Chengdu, capital of southwest China's Sichuan Province, and called on health workers to take the lead in blood donation to ease the country's blood supply short
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