单词：grounding transformer
单词：grounding transformer 相关文章
Rho Ophiuchi dark cloud is one of the closest star-forming regions to our own solar system. Located near the constellations Scorpius and Ophiuchus, the nebula is about 407 light years away from Earth. The infrared astronomical satellite, now celebra
国家地理2008年
HEALTH REPORT -July 3, 2002: Sudden Cardiac Death By Nancy Steinbach This is the VOA Special English Health Report. An American professional baseball player, Darryl Kile, died recently. He was thirty
健康与环境
By Jeff Swicord Washington, DC 19 September 2006 watch Iranian Artifact Suit It is a case that has victims of a terrorist bombing seeking restitution from a U.S. museum, and the U.S. State Department and the government of Iran on the same side. Jeff
2006年VOA标准英语（九月）
By Jessica Berman Washington 04 January 2007 There is more evidence that moderate alcohol consumption may be beneficial. An international team of scientists has found that men with high blood pressure can safely drink one or two glasses of wine per
2007年VOA标准英语（一月）
cyberchondriac的意思是上网自诊狂，靠网上搜集的医学知识来断症，甚至质疑医生的诊断。然而，网上资讯浩瀚如海，互相贯连、无限引伸，例如在查阅头痛和出红疹的根源时，互联网都可以连结
美国俚语
Transcript for Reference Only --chunshan The infrared astronomical satellite, now celebrating its 25th anniversary, gave us the first all sky view of our dusty infrared universe. Floating above the galactic center is the Rho Ophiuchi Cloud, about 400
自然百科2008年