As It Is - Remember Your Chemistry Classes? An international team of researchers recently reported creation of a new element that is 40 percent heavier than lead. The researchers successfully developed what they are calling Element Number 117 at a la

发表于:2019-01-03 / 阅读(62) / 评论(0) 分类 2014年VOA慢速英语(八)月

Having the opportunity to take on a diverse range of classes such as economics and chemistry along with her music studies is the perfect combination for Diane. Marsha James | Washington DC 10 August 2010 Oberlin Conservatory of Music Student Diane Ly

发表于:2019-01-13 / 阅读(47) / 评论(0) 分类 VOA标准英语2010年(八)月

Automation 自动化 A: Is the factory fully-automated? A:本工厂是全自动化吗? B: Not completely. Our production process is partially-automated. We use robots on the production line for routine assembly jobs but some of the work is still do

发表于:2019-01-14 / 阅读(65) / 评论(0) 分类 职业技术英语口语

市场营销是生产和交换过程的一部分,涉及到货品和服务从生产商到消费者的流通。它通常被定义为商品的分配和销售。市场营销包括了与商品从生产商到消费者转移有关的一切活动。以下是

发表于:2019-01-26 / 阅读(30) / 评论(0) 分类 实用英语

JEFFREY BROWN:And now to part two of our investigative look at the safety of America's drinking water. Science correspondent Miles O'Brien reports on the toxic chemical made famous in the movie Erin Brockovich, its potentially harmful effect on human

发表于:2019-01-27 / 阅读(37) / 评论(0) 分类 PBS访谈环境系列

By Tom Rivers London 07 October 2009 Ada Yonath (file photo) Two Americans and one Israeli share this year's Nobel Prize in Chemistry for their work showing how the DNA code is translated into life itself. Americans Venkatraman Ramakrishnan and Thom

发表于:2019-02-03 / 阅读(48) / 评论(0) 分类 VOA标准英语2009年(十月)