美国动力公司研发提升五成油效对置活塞二冲程发动机

美国动力公司研发提升五成油效对置活塞二冲程发动机 This little engine looks like it has only three pistons, but in fact, it has six, sharing only three cylinders. 这台小身材引擎看起来只有3个活塞,但事实上却有

公务员口语24

Fire Claim Investigation Dialogue 1 -Fire department. -I'd like to speak to someone about a fire I had last night on my farm. -Do you have a policy with F.P.A? -I do.That's why I'm phoning you now. -All right,sir.could you give me the number of the

英语1000高频词汇(超级):第17课

[00:03.00]hold [00:03.41]hold n.把握, 把持力, 柄, 控制, 监禁, 掌握, 货舱 vt.拿着, 保存, 支持, 占据, 持有, 拥有 vi.支持, 保持, 有效 n.控制, 保留 [00:06.29]holiday [00:06.70]holiday n.假日, 节日, 假期 [00:09.38]home [00:09.78]home n.家, 住宅, 家乡, 本

英语1000高频词汇(初级):第22课

英语基础--《英语1000高频词汇》(英语学习必须熟悉的1000词汇) 这是英语词汇中最基础的、使用频率最高的，约1000个词汇，不管是中学毕业还是大学毕业，这1000个单词都应该非常熟悉，因为这些单词真的太基础了，使用频率非常高。 如果听过《朗文词典》能用3000以内的单词

英语1000高频词汇(中级):第22课

[00:03.61]I pron.我 n.字母I, [化]碘元素, 罗马数字1 [00:12.52]ice [00:13.12]ice n.冰冻食品 vt.冰冻, 覆以冰 vi.结冰 abbr.[军] Intenal Combustion Engine, 内燃机 [00:23.94]ice cream [00:24.54]ice cream n.冰淇淋 [00:30.65]idea [00:31.25]idea n.想法, 念头,

历史英雄名人演讲 第98期:汽车的未来(1)

10. The Future of Cars 10. 汽车的未来 The fact is, when we do our market research around the world, we see that there's nearly a universal aspiration on the part of people to own an automobile. And 750 million people in the world today own a car

英语听力文摘 English Digest 587、气泵上的辛烷值是什么意思？

What Do Octane Numbers Mean? At the gas pump, you have a choice of octane numbers. 87? 93? Whats the difference? To explain octane numbers, lets take an imaginative leap into the internal combustion engine of a car. Inside the cylinders are combustio

走进哈佛大学 第8期:唐纳喷泉

Once upon a time, if you planned on splashing water around in a decorative manner, you were expected to provide a basin in which the water could be collected afterward. In a long history reaching back to the Rome Empire, fountains had always had basi

SSS 2008-04-03

This is Scientific Americans 60-Second Science, I am Cynthia Graber .This will just take a minute. How can we improve engines, inhalers and fire extinguishers? Maybe by copying a beetle. The bombardier beetle's name might scare off predators if they

SSS 2009-03-16

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. On March 11th, Interior Secretary Ken Salazar called for a moonshot for energy independence. Hes set up a task force to look into the large-scale product

SSS 2010-07-06

Die-hard advocates of alternate energy might fantasize about cars that could one day run on water. But scientists in India have gone a step further. Theyve mathematically modeled an engine that should allow a motorcycle to run on aircompressed air, t

胡敏读故事记单词托福词汇181

181. Preparing for the pyramids准备探索金字塔 purge-quilt As an Egyptologist, I have been to Egypt many times. This time, I am going to quench my thirst for adventure and try to solve the puzzle of the Pyramids. To undertake such a questionabl

新型内燃机效率提高50%

This Internal Combustion Engine is 50% More Efficient 新型内燃机效率提高50% Internal combustion engines in cars may be on their way out, but experts agree it will take a few decades before electric-powered vehicles become dominant. Meanwhile

Shelter-in-place ordered after fire at NASA

HOUSTON, July 25 (Xinhua) -- A shelter-in-place was ordered after a battery caught fire during a testing at NASA's Johnson Space Center Monday morning. A battery was being tested inside a containment system when it got overheated and caught fire at a

科学家将污染物变成打印机墨水

Anirudh Sharma doesn't just want to pull harmful carbon from the air. He wants to offer a cheaper alternative to the exorbitant costs of ordinary printer ink. 阿尼鲁德夏尔马不仅想除掉空气中的有害炭物质，还希望创造一种更便

万物简史 第457期:小生物的世界(28)

From time to time certain strains of virus return. 有几种病毒不时重复出现。 A disagreeable Russian virus known as H1N1 caused severe outbreaks over wide areas in 1933, then again in the 1950s, and yet again in the 1970s. 一种名叫H1N1的

你所爱之人的痛苦

I do not know the suffering of a person you love but love a person can love to the original as deaf as dumb. He is one of him, no matter what, you are accepted, do not want to do anything a little bit of modification. And the extraordinary in his eye

安赛乐米塔尔将发布新型高强度汽车用钢

ArcelorMittal will launch a new high-strength automotive steel later this year, throwing down the gauntlet to its rivals in the race to make cars lighter. 安赛乐米塔尔(ArcelorMittal)将于今年晚些时候发布一款新型高强度汽车用钢，

经济学人:六大经济学原理:新凯恩斯主义(2)

Inflation has behaved strangely over the past decade. 在过去的十年中，通胀表现得很陌生。 The recession that followed the financial crisis of 2007-08 sent American unemployment soaring to 10%. 2007-08年金融危机之后的衰退曾令

生活大爆炸第三季第二十一集_2

这是你耶 Look,it's you. 非常感谢你们让我住在这里 Thank you so much for opening up your home to me. 谁愿意住宾馆啊 Well,who wants to stay in a hotel? 窗户又打不开 诡异的卡片式钥匙 Windows that don't open,those craz