单词：positron emission
单词：positron emission 相关文章
Negotiators at the climate summit in Copenhagen last month failed to agree on a new climate change treaty to replace the current Kyoto Protocol before it expires in 2012. Jonathan Lash is president of World Resources Institute, an environmental polic
VOA标准英语2010年(一月)
India says it is satisfied with outcome of the recent climate summit at Copenhagen, which did not spell out specific targets for reducing carbon emissions. India is hailing the united position adopted by big developing countries at the summit. Anjana
VOA标准英语2009年(十二月)
By Nancy-Amelia Collins Bali, Indonesia 13 December 2007 The head of the United Nations Climate Change Conference is warning that a deadlock between the United States and the European Union over greenhouse gas emission targets may derail the conferen
VOA常速英语2007年（十二月）
Briefing a news conference on Thursday, Xie Zhenhua, China's special representative on climate change, said the country is exploring emissions trading mechanisms. China now is piloting emission trading in seven provinces or municipalities, and the wo
2015CRI中国国际广播电台
China is now on the front lines of efforts to develop energy sources that can balance the goals of sustaining economic growth and protecting the environment. Decisive action is needed to strengthen policy frameworks across the country to reach that g
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The capital will raise its automobile-emission standards on Friday, making them the strictest in the nation. The Beijing Environmental Protection Bureau said the move is expected to reduce auto pollution by 40 percent to better improve the hazardous
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