单词：low power-factor mercury lamp ballast
单词：low power-factor mercury lamp ballast 相关文章
The Hidden World Around Us By Harry Overstreet Ever since Socrates was introduced to my adolescent mind he has been one chief master of my thinking. What he believed still seems to me to be indispensable for carrying on an intelligent and responsible
英语励志美文精华
Here are two things that nobody wants to see increase: your power bill and pollution. Boo! We're going to show you a small step you can take that can turn these arrows the other way. Yay! We're focused on your friendly household light bulb, the incan
英语解说豆知识2009年
Part 13 Ballast handling 1. Scuppers plugged. 2. Open sea suction valve and report. 3. Sea suction valve closed. 4. Ballast pump stopped.
海事英语
Studies that will be released today show that fish, birds and mammals in New England have significant amounts of mercury in their bodies. The studies find the toxic metal in some unexpected habitats and they suggest that power plants in the Midwest a
2009年NPR美国国家公共电台7月
The Mercury Mess By Samantha Levine / 2004, as first appeared in U.S. News nbsp; What are the dangers of mercury in fish? Can the mercury mess be cleaned up? 1 Are these fish safe to eat?” It’s a
彭蒙惠英语
ballast, ['bləst] n 压舱物（放在船舱或热气球吊篮里的重物，以增加稳定性）；（性格上的）稳定因素 【记】ball球，last最后－最后的球－船最底层放了好多球－压舱物 【类】ballast:instability＝
不择手段背单词
说一口流利的英语，从简单的单词开始。 听听，读读，背背，今天你的词汇量又增加了5个。 单词/词义 中英例句 单词听读 idiosyncrasy [ 7idiE5siNkrEsi ] One of
每日攻克5词
1Then the angel who talked with me returned and wakened me, as a man is wakened from his sleep. 2He asked me, What do you see? I answered, I see a solid gold lampstand with a bowl at the top and seven lights on it, with seven channels to the lights.
撒迦利亚书
US Sets Mercury Pollution Limits from Power Plants 美规定对发电厂进行汞污染限制 The United States government has ordered the country's coal-burning power plants to reduce mercury polluti
VOA2005（上）--环境科学探索
This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Last month the journal Science reported that a Swedish company was planning on using the body heat generated by commuters in a Stockholm train station to
Scientific American(二)月
美国研究人员尝试从微风中获取能源 Solar chargers are effective only when the sunlight is relatively strong,but researchers at the Construction Engineering Research Laboratory in Illinois turned to the wind as another natural source of
VOA标准英语2015年(十二月)
SCIENCE IN THE NEWS - Mercury in Fish / Life on Land / The Goldman Environmental Prize By Broadcast: Tuesday, May 11, 2004 (THEME) VOICE ONE: This is SCIENCE IN THE NEWS, in VOA Special English. I'm B
科技之光
The U.S. space agency(代理中介) has released the first ever image taken of the surface of Mercury from a spacecraft orbiting the planet. The black and white image, posted on the NASA website Tuesday, shows a surface pocked with craters of varying
英语新闻
By Paul Sisco Washington, DC 15 February 2008 Scientists have started analyzing data and images acquired when the Messenger space probe passed within 200 kilometers of the planet Mercury last month. It was the first flyby of the solar system's inner-
VOA常速英语2008年（二月）
Plants were world travelers, long before tourists like you and me, were able to fly off to vacation around the world. When Columbus sailed west, he was seeking precious spices of the Indies. He missed his original destination, but because he and othe
英语听力文摘 English Digest
In that hut, we walked in, 我们走进那间小草屋 and her father and his four wives were sitting there, 她的父亲和四个妻子坐在那里 and her sisters who had just returned because 她的姐妹们也回来了， they had all fled when s
TED演讲教育篇
heavyweight 重量级的，有影响力的人 We need some heavyweight partners. 我们需要一些重量级的合作伙伴。 He is a heavyweight in the IT business. 他是IT界的重量级人物。
愉悦口语
The Nautilus is made up of two hulls, one inside the other; between them, joining them together, are iron T-bars that give this ship the utmost rigidity. 诺第留斯号由双层船壳造成， 一层是内壳，另一层是外壳，两壳之间，用许
《海底两万里》中英双语有声读物
That's all? 仅仅这个数目吗？ That's all, Professor Aronnax, and the calculation is easy to check. 仅仅这个数目，阿龙纳斯先生。并且，很容易用计算来证实。 Now then, I have supplementary ballast tanks capable of shippi
《海底两万里》中英双语有声读物