单词：best operating condition
最佳工作条件
单词：best operating condition 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
发表于:2018-12-05 / 阅读(64) / 评论(0)
国家地理2008年
国家地理2008年
By Lisa Schlein Washington 17 April 2008 A new drug that offers hope to millions of malaria sufferers is being launched in Latin America and Southeast Asia. The medicine, developed by a Brazilian pharmaceutical company and a non-profit drug developme
发表于:2019-01-31 / 阅读(53) / 评论(0)
VOA常速英语2008年（四月）
VOA常速英语2008年（四月）
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
发表于:2019-02-26 / 阅读(149) / 评论(0)
自然百科2008年
自然百科2008年