单词：alkaline earths
单词：alkaline earths 相关文章
Scientists know that the combination of extreme heat and pressure changes carbon into diamonds. Such heat and pressure exist only in the hot, liquid mass of molten rock deep inside the earth. It is th
自考英语（一）78讲
Rare Minerals May Be in North Korea 稀有矿物质可能在朝鲜发现 Hello and welcome back. Im Jim Tedder in Washington. Today we are going to talk about something that is worth a lot of money, and it is buried in the ground. Were not exactly go
2014年VOA慢速英语(二)月
This is Scientific American's 60-Second Science. I'm Steve Mirsky . Got a minute ? Were on the verge of finding out how frequently habitable planets occur in the universe. That was astronomer Alan Boss at the AAAS meeting on February 14th. And I thin
Scientific American(二)月
金霸王国际公司是世界上制造和销售高效碱性电池的领先企业。金霸王是世界上最 知名卓越的消费品品牌之一。对于世界各地的人们来说，金霸王这个品牌代表了高品质的电池产品和不断创新
世界名牌博览
Duracell is perhaps the worlds best known make of batteries. The brand is owned by the multinational conglomerate Proctor and Gamble. Duracell was founded by scientist Samuel Ruben and entrepreneur Philip Rogers Mallory. They developed an alkaline te
各大品牌英文介绍
This is the VOA Special English Economics Report. Today we continue our report on the group of chemical elements known as rare earth metals. These are mined from the earth and used to make technology from mobile phones to missiles. The United States
2010年VOA慢速英语(十)月
China's father of hybrid rice is planning to expand its production of sea-rice at a newly founded research center in Qingdao, a port city in the eastern province of Shandong, local sources said last Saturday. 据当地知情人士上周六透露，中国
英语新闻
China has scrapped a quota system that was intended to restrict rare earth exports. The move involves 17 metals used in high tech sectors, it's aimed at complying with a World Trade Organization ruling released last year. The Ministry of Commerce iss
cctv9英语新闻2015年
Vital for so many modern technologies, rare earths remain among the most sought-after minerals on the planet. It was recently suggested at the American Association for the Advancement of Science that the sea beds should be mined for them. 对如此多现
英语新闻
BEIJING, April 5 (Xinhua) -- China on Tuesday announced embargoes on some imports from and exports to the Democratic People's Republic of Korea (DPRK). In terms of imports, China banned purchases of coal, iron ore, gold, rare earths and several other
cctv9英语新闻2016年
ways to kill stress 减压秘诀 Eat Healthier 吃健康的食物 Though a lot of stress is psychological, there are also plenty of physical factors that contribute to this natural human response to perceived danger. In order to mitigate stress, make
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