单词：hydrogen atomic clock
单词：hydrogen atomic clock 相关文章
Five Minutes to Midnight 滴！答！滴！毁灭倒数计时 by Kevin Lustig The University of Chicago publishes the Bulletin of the Atomic Scientists, a magazine about topics related to nuclear technology. On the cover of every issue of the magazin
常春藤解析英语
Once again, North Korea has defied international demands to give up its nuclear and missile programs. They're illegal, as far as the United Nations is concerned. They're a right as far as North Korea is concerned. And the communist country said on Su
CNN美国有线新闻2017年9月
Doomsday Clock Moves Forward末日钟被调前 Efforts to rid the world of nuclear weapons continue to meet obstacles, and that is one main reason why the Bulletin of the Atomic Scientists moved the Doomsday Clock forward to five minutes to midnight.
VOA标准英语2012年(一月)
China has launched two satellites into space on a Long March carrier rocket from the Xichang Satellite Launch Center in Sichuan Province. The satellites are part of the country's growing BeiDou Navigation Satellite System. The launch of the Long Marc
2018CRI中国国际广播电台
The structure of atoms and the significance of protons will come in a following chapter, so for the moment all that is necessary is to appreciate the organizing principle: hydrogen has just one proton, and so it has an atomic number of one and comes
万物简史
By Stephanie Ho Washington 17 January 2007 watch Doomsday Clock report An international group of atomic scientists is warning of the dual threats to the world posed by nuclear weapons and climate change. VOA's Stephanie Ho reports from Washington. K
2007年VOA标准英语（一月）