单词：gray body radiation
单词：gray body radiation 相关文章
T he four seals paddled with ease through the sunlitwaters of the Selkie Cove and into the Jellyfish Cave. The water in the cave was cold and murky. But in hisseal body, Jack was warm; and with his seal eyes, hecould see clearly. As they swam farther
汪培珽儿童英文分级书单《神奇树屋》
This is Scientific American's 60 Seconds Science. I'm Steve Mirsky. Got a minute? In 1900 legendary physicist Max Planck described the way energy gets dissipated from any nonreflective object, called a blackbody. But even Max said if something else i
Scientific American(八)月
U.S. health experts monitoring Japan's nuclear crisis are seeking to explain health risks from radiation（放射） exposure, while cautioning that radiation levels measured this week at the Fukushima-Daiichi power plant in northern Japan have not y
英语新闻
DOUG JOHNSON: This is SCIENCE IN THE NEWS, in VOA Special English. I'm Doug Johnson. FAITH LAPIDUS: And I'm Faith Lapidus. Today, we will tell about skin cancer. (MUSIC) DOUG JOHNSON: Skin cancer is one of the most common forms of cancer. It is also
2010年VOA慢速英语(七)月
Public opinion polls suggest most Americans favor full body scanners as a way to protect against terror attacks on commercial airliners. The benefits of scanners are being debated in a number of countries. Some groups have raised privacy issues. But
VOA标准英语2010年(一月)