单词：raschig rings
单词：raschig rings 相关文章
Georgia is emerging battered but defiant from its recent military confrontation with Russia. Russian troops still control significantly more Georgian territory than they did a month ago and no one can answer the key question: How can the occupiers b
VOA标准英语2008年（八月）
Scientists Ponder 'Epoch' of Damage to Global Water System Scientists say a new geologic epoch has begun whereby humans are causing major damage to global water systems. They warn of a planetary transformation comparable to the retreat of the glacier
VOA标准英语2013年(五月)
The military conflict between Russia and Georgia over two breakaway regions has subsided, but tensions remain between Moscow and Tbili. In this report from Washington, Senior Correspondent Andr de Nesnera looks at the latest developments and issues
VOA标准英语2008年（九月）
By Peter Fedynsky Tbilisi 04 January 2008 Georgia holds a snap presidential election on Saturday in which six candidates are challenging incumbent Mikhail Saakashvili, who is accused of rigging the process in his favor. VOA Correspondent Peter Fedyns
VOA标准英语2008年（一月）
By Andre de Nesnera Washington 11 October 2007 Relations remain tense between Russia and Georgia several weeks after Georgian forces killed two Russian military officers in the Georgian separatist region of Abkhazia. In this background report from Wa
2007年VOA常速英语（十月）
By Peter Fedynsky Tblisi 11 November 2007 President Mikhail Saakashvili says Georgia's state of emergency will be lifted when the country is secure. The announcement comes as top Georgian government officials meet with the opposition to discuss ways
VOA常速英语2007年（十一月）