单词：borosilicates
单词：borosilicates 相关文章
This is Scientific Americans 60-Second Science. Im Christopher Intagliata. Got a minute? Imagine climbing diamond mountains, or hiking around the graphite shores of a lake of tar. Sound a little sci-fi? Well a new discovery suggests planets like that
Scientific American(十二)月
This is the VOA Special English Education Report. Most American schools have boys and girls in the same classroom. But a public high school in the small, rural town of Boonsboro, Maryland, offers a special program. Top students in the ninth and tenth
2010年VOA慢速英语(十二)月
Economy, Post Office Woes Force Iowa Town off Map The United States Postal Service is facing unprecedented financial losses. Postmaster General Patrick Donahoe recently told lawmakers his agency needed government intervention by the end of the year t
VOA标准英语2011年(九月)
Legislation 法规 A: Has your company been affected much by government legislation? A:政府法规对你们公司影响大吗？ B: Yes, we have. We've had to clean up our production process a lot to meet tough government standards. B:是。为了严格
职业技术英语口语
In public high schools across America, large classes containing a mix of both boys and girls are the norm. However, in a move that's drawing high marks from students, one public school in Maryland has decided to buck that tradition. Class experimentA
VOA标准英语2010年(十一)月
So how much do we know about what's inside the Earth? Very little. 因此说，我们对地球的内部情况究竟了解多少？很少。 Scientists are generally agreed that the world beneath us is composed of four layers, 科学家们普遍认为，
万物简史