单词：time delay element
单词：time delay element 相关文章
|■ |1upbeat |a. |positive and making you feel that good things will happen |愉快的；积极向上的 || ||He doesn't have the sort of upbeat good humor he needs to compete for jobs. |他不具备那种争取工作所需的乐观心态。 || ||Sc
新视野大学英语读写教程词汇 第四册
Science and Technolgy. 科技。 Modern alchemy. 现代炼金术。 Turning a line. 进入新的一行。 The race to extend the periodic table continues. 扩展元素周期表的比赛仍在继续。 ONE of the first inklings that chemistry has an u
经济学人科技系列
But they never got there. The first disappeared into deep space. Another missed its target when its coordinates were confused. One NASA control center was working in metric, the other in feet and inch
火星生命
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
By David Gollust New York 28 September 2007 Major world powers meeting Friday in New York agreed to delay a new UN sanctions resolution against Iran until November. The five permanent U.N. Security Council member countries and Germany said sanctions
2007年VOA标准英语（九月）
By David Gollust State Department 24 March 2006 U.S. Secretary of State Condoleezza Rice said Thursday there should be no further delay on a U.N. Security Council statement calling on Iran to halt ura
2006年VOA标准英语（三月）