土壤矿物化学

Mineral Smuggling Losses Said to Cost

By David Lewis A natural resources watchdog group issued a report Tuesday warning that smuggling and corruption are costing the Democratic Republic of Congo millions of dollars a month in lost revenue

发表于:2018-12-08 / 阅读(63) / 评论(0)

VOA2004（下）--世界经济

VOA慢速英语2014 Remember Your Chemistry Classes?

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)

2014年VOA慢速英语(八)月

Mars Rover to Begin Taking Soil Samples This Week

Mars Rover to Begin Taking Soil Samples This Week Jessica Berman NASA engineers say the Mars rover will begin taking its first soil samples as soon as it departs the landing platform . Engineers say t

发表于:2019-01-04 / 阅读(64) / 评论(0)

VOA2004（上）--各类新闻

VOA标准英语2012--Harnessing the Mineral Wealth of Poor Countries

Harnessing the Mineral Wealth of Poor Countries 新方针指导贫穷国家正确利用其丰富矿藏 Developing countries with potential mineral riches have often fallen prey to corruption and mismanagement. As a result, theyve failed to benefit fr

发表于:2019-01-14 / 阅读(50) / 评论(0)

VOA标准英语2012年(二月)

Korean Aid to Help Unearth Cameroon’s Mineral Resources

Cameroon's new mineral research center will begin operations this year. South Korean mining researchers are making trips to Cameroon to determine the overall cost of the facility, to be located in the capital, Yaounde. They say the center will cost s

发表于:2019-01-14 / 阅读(89) / 评论(0)

VOA标准英语2011年(二月)

VOA标准英语2009年-3 Scientists Share Nobel Chemistry Prize f

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)

VOA标准英语2009年(十月)

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acanthocythereis echinata

alemao

all the whole world knows...

boring machine upright

carfins

carlton colville