单词：diffraction spacing
绕射间隔
单词：diffraction spacing 相关文章
塞内加尔推行生育间隔 或可减少贫困 On a busy day at the Fith Mith Clinic in a suburb of Gudiawaye, just outside of Dakar, MamyDiop had just given birth to her third child, only one year and three months after the previous.She did not k
发表于:2018-12-16 / 阅读(570) / 评论(0)
VOA标准英语2016年(七月)
VOA标准英语2016年(七月)
International Conference Highlights Family Planning in Senegal With the global population reaching 7 billion this year, doctors and health officials are advocating better family planning methods. Senegal, where some 2,000 international delegates gath
发表于:2019-01-13 / 阅读(466) / 评论(0)
VOA标准英语2011年(十二月)
VOA标准英语2011年(十二月)