单词：strontium-apatite
锶磷灰石
单词：strontium-apatite 相关文章
Soon after taking up his position, Davy began to bang out new elements one after anotherpotassium, sodium,magnesium, calcium, strontium, and aluminum or aluminium, depending on which branch of English you favor. 上任不久，戴维开始宣布发现一
发表于:2019-01-29 / 阅读(75) / 评论(0)
万物简史
万物简史
In January 2015, a fire in one of Russia's largest university libraries damaged more than 1 million historical documents, an incident which some media described as a cultural Chernobyl. 2015年1月，俄罗斯最大的大学图书馆之一发生了火灾
发表于:2019-02-02 / 阅读(75) / 评论(0)
英语新闻
英语新闻