单词：ultra-high vacuum valve
单词：ultra-high vacuum valve 相关文章
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英文名句短语
This is Scientific American 60-Second Science. I'm Cynthia Graber. This will just take a minute. The fridge is one of your home's biggest energy hogs. Better insulation can make refrigerators much more efficient. And a panel encasing a vacuum is one
Scientific American(五)月
China has long depended on coal-burning power plants to fuel its explosive growth over the past three decades. As a result, air pollution has risen to alarming levels in central and eastern regions. Policymakers have been working hard to shift the co
2017CRI中国国际广播电台
By Barry Wood Belgrade 03 February 2008 Serbian pro-Western President Boris Tadic has claimed victory over his ultra-nationalist challenger Tomislav Nikolic in a closely contested runoff vote. VOA's Barry Wood in Belgrade reports that amid mild and s
VOA常速英语2008年（二月）
This year, TV makers are doing their best to give huge-screen fanatics more breathing room. New ultrahigh-definition sets were shown off Monday by LG Electronics, Sharp, Sony and Samsung Electronics at the international CES gadget show in Las Vegas.
英闻天下
快过年了，你有没有更新家电？买些新奇产品？冰箱、烤箱、吸尘器、搅拌机、电视盒子、蓝牙音响、无线吸尘器？今天，Jenny, Adam告诉你齐全的家电英语！ 关键词： 家电英语怎么说？ Appli
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