单词：regeneration of ion-exchange softener
单词：regeneration of ion-exchange softener 相关文章
我们今天学的词是：planet。Planet是行星。不过你听说了吗，太阳系中排行第九的行星冥王星Pluto被降级了。Astronomers' reclassification strips ninth planet of status in solar system. 国际天文学会对行星重新定
英语每日一词
SCIENCE IN THE NEWS - Scientists Find Most Earth-Like Planet Yet Discovered By Dana Demange, Cynthia Kirk, ... Broadcast: Tuesday, June 28, 2005 (MUSIC) VOICE ONE: This is SCIENCE IN THE NEWS, in VOA
科技之光
By Carolyn Weaver New York City 19 July 2007 A new documentary by director Benson Lee, Planet B-Boy , is about a dance form called b-boying, or break dancing. Invented on the streets of New York in the early 1970s by black and Latino youths, its beco
2007年VOA标准英语（七月）
By Paul Sisco Washington 14 May 2008 The U.S. space agency's Mars probe is within weeks of landing near the Red Planet's north pole. NASA scientists in Washington recently talked about what they call the mission's seven minutes of terror. That is how
VOA标准英语2008年（五月）
The U.S. space probe MESSENGER is poised to enter orbit around Mercury（水银） early Friday, Universal time, capping a nearly seven-year journey to the solar systems innermost planet. Scientists with the U.S. space agency, NASA, hope the orbiting
英语新闻
WASHINGTON, Sept. 15 (Xinhua) -- A team of researchers has discovered a planet that orbits around a pair of stars, the U.S. space agency NASA announced Thursday. This is the first instance of astronomers finding direct evidence of a so-called circumb
英语新闻