单词：nist-traceable
单词：nist-traceable 相关文章
WHITE HOUSE President Donald Trumps administration wants to shut down U.S. government radio stations that announce official time, a service in operation since World War II. WWV and WWVB in the state of Colorado and WWVH on the island of Kauai in the
VOA标准英语2018年(九月)
This is Scientific Americans 60-Second Science. Im Karen Hopkin. This will just take a minute. Many of the key molecules for life have a specific direction, or handedness: DNA twists to the right, amino acids to the left. Now scientists at the Nation
Scientific American(四)月
banister, ['bnistə] n （楼梯的）栏杆＝balustrade＝rail 【记】ban挡住，ister东西－挡住的东西－栏杆 【类】staircase:banister＝garden:fence楼梯需要栏杆保护＝花园需要栅栏保护
不择手段背单词
Three radio stations in the United States mainly broadcast one thing: the official time. The three are radio stations WWV and WWVB, in the state of Colorado, and WWVH, on the island of Kauai in Hawaii. They send out signals that are used by millions
2018年VOA慢速英语(九)月
By Alan Silverman Hollywood 03 June 2006 Jennifer Aniston and Vince Vaughn co-star as a couple whose relationship crumbles and it's only when it seems too late that each realizes what might be lost if
2006年VOA标准英语（六月）
Youve given some thought to oxygen, carbon, uranium. But youve probably never mused about the element ytterbium, symbol Yb. A new study by scientists at the National Institute of Standards and Technology, or NIST, says that ytterbium could find a rol
Scientific American(八)月
Next year will mark the 110th anniversary of a U.S. government agency that is unknown to most Americans. Yet its work affects their everyday lives in countless ways. Generations knew the agency as the National Bureau of Standards. When it was founded
VOA标准英语2010年(十一)月
GQ magazine is marking the 10th anniversary with its annual Man of the Year issue. And this year, there are three separate covers, one featuring actor Vince Vaughn, another with popular recording arti
访谈录
Tell me, Mechanist, is it true? Does none of it bother you? Once upon a time Upon a time behind us The mechanist inclined Clockworks of time define us Who you are, who you are; Merely springs that tick The time of things away The cry from the beast i
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