单词：acetone furfural resin
单词：acetone furfural resin 相关文章
Simple New Test Detects Early Signs of Diabetes 新型简单测试或能检测出糖尿病早期迹象 People with Type 1 diabetes, usually diagnosed in children and young adults, must take insulin injections and watch their diet to keep their blood
VOA标准英语2015年(一月)
Air pollution outside is easy to spot, hanging over the city, or sputtering from a tailpipe. But there's lot of indoor air pollution, too, even if it's not as obvious. It's caused by volatile organic compounds, or VOCs. They can come from building ma
2016年Scientific American(八)月
By Catherine Maddux Washington 04 May 2006 The pressure on Sudan's warring parties in the western Darfur region is growing as a third deadline approaches Thursday to reach a peace deal proposed by the
2006年VOA标准英语（五月）
Sudan and Darfur's most active rebel group, the Justice and Equality Movement, has signed a declaration of good intentions in Doha. Qatar has been mediating talks between Khartoum and the rebel group since last Tuesday. Sudanese rebel group JEM lead
VOA标准英语2009年(二月)
By Noel King Debbis, Darfur, Sudan 08 June 2006 The task of urging holdout rebels to sign the Darfur Peace Agreement has fallen to the African Union, which brokered the deal in Abuja, Nigeria. It is a difficult job, and across the region, AU peaceke
2006年VOA标准英语（六月）
By David Gollust Washington 05 May 2006 Robert Zoellick U.S. Deputy Secretary of State Robert Zoellick, who helped reach Friday's Darfur peace accord in Nigeria, calls the deal an important step on th
2006年VOA标准英语（五月）