单词：candela(cd)
烛光{发光强度单位}
单词：candela(cd) 相关文章
Scientists monitor the injection of proton and ion into the Large Hadron Collider, which is 100 meters underground near Geneva, Switzerland, 23 Oct 2009 A very specialized group of scientists meets this month (July 22 - 28) in Paris for a biennial co
发表于:2019-01-13 / 阅读(47) / 评论(0)
VOA标准英语2010年(七)月
VOA标准英语2010年(七)月