单词：gas shielded arc welding
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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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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 Archaeological data are historical documents in their own right, not mere illustrations to written texts, Just as much as an
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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
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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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Participants at the United Nations Climate Change Conference in Cancun, Mexico are complaining about long delays amid heavy security. Some environmental activists say they are being kept well away from conference sites, and when a group tried to stag
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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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It's hard to admit that I need help, but I do. For 45 days from the end of December to early February, I was in inpatient therapy receiving guidance for the issues I'm facing. I have a long way to go. But I've taken my first steps in the right direct
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iron and steel industry 钢铁工业 ironworks 铁厂 foundry 铸造车间 steelworks, steel mill 钢厂 coking plant 炼焦厂 electrometallurgy 电冶金学 powder metallurgy 粉末冶金学 blast f
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