机械类词汇大全-24

967 、 卷尺 flexiblerule;taperule 968 、 接口；界面；分界面 interface 969 、 接合 joining 970 、 接合工具 joiningtool 971 、 接地 earthing 972 、 接缝 lappedseam;seam 973 、

7-12 美国航空航天局成功试飞超高音速喷气机

NASA Successfully Tests Hypersonic 1 Jet Three years after its first test flight ended in an explosion, NASA on March 27 successfully launched an experimental jet that the agency believes reached a re

听广告学英语-Mitsubishi GDI Engine三菱汽车引擎

听广告学英语:Mitsubishi GDI Engine三菱汽车引擎 Mitsubishi GDI 三菱汽车引擎 原文 It's the GDI, the engine technology of tomorrow is already being driven today. Mitsubishi's GDI engine produces more power, reduces fuel consumption, and emits less carb

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

CNN 2012-04-07

hi,I am Carl Auzus.You are watching CNN studentnews.We have a couple of awsome things in this particular Friday.The Men's field high tiger in Texas got our social media question,right?So congratulates to them.And we have a suprise for you in today's

美国英语听力80篇3 Lesson45

[00:07.58]Igor Sikorsky was born in the city of Kiev, Russia; on May 25, 1889. [00:16.12]His mother was a doctor. [00:15.12]His father was a professor of psychology. [00:18.59]Igor became interested in science when he was very young. [00:23.82]He was

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

365个英语简短小故事-138. Body in a Barrel (1)

George Gobel thinks that he might have helped dump his own sisters body. George told police that recently his brother-in-law Russell had asked him to help move a big metal barrel out of his house. Ill buy you a case of Bud, Russell promised. The barr

英文杂志-Magazine：Wormholes

Wormholesby Linda BaxterHave you ever read Carl Sagan's 1985 science fiction novel 'Contact'? Or have you seen the film of the same name starring Jodie Foster? If you have, then you will remember the scene near the end of the film, when the heroine t

50年了,我们离《2001:太空漫游》还有多远?

Remembering 2001: A Space Odyssey 50 Years Later It was 50 years ago that the science fiction film 2001: A Space Odyssey opened in theaters across the United States. The film, directed by Stanley Kubrick, was based on a book by Arthur C. Clarke. The

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

世界名人简介 第5期:安格拉·默克尔

Angela Merkel was born in Hamburg in 1954. She became Germanys first female Chancellor and the first from communist East Germany in 2005. Forbes magazine listed her as the most powerful woman in the world in 2006 and 2007. Western media often dub her

美联社新闻一分钟 AP 2014-10-07

This is AP News Minute. A day after addressing a harsh UN General Assembly, Indias new Prime Minister Narendra Modi received sundries of receptions in New York City Sunday. He greeted crowds from a rotating stage of American square garden. In Hong Ko

VOA慢速英语 2007 0605a

This is the VOA Special English Agriculture Report. Sorghum farmers in eastern Uganda, working with scientists, have tested some lower-cost ways to improve their soil. Little rain and poor soil fertility are problems in that area, as in other parts

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

英语听力：自然百科 地球自转的奥秘

Well, the story of the earth spin goes back all the way to the origin of the solar system, four and a half billion years ago. The solar system started out as a cloud of gas and dust. And these gas and dust clumped together to form the sun and the var

英语听力文摘 English Digest 482、太阳也在自转？

As the Sun Turns 太阳也在自转？ Everyone knows that the earth turns. As a matter of fact, the sun turns too. Altough a lot of people don't realize it. Im not talking about being in orbit , nowthe earth definitely orbit s the sun and not the ot

英文原版对话1000个:778 Climbing

Todd: So, Shona, you are quite fit. You like to run. Do you like to do anything else? Shona: Yeah, actually. I like quite a lot of different sports. I like to play tennis. That is like something that I like to participate in with someone else, but al

美国国家公共电台 NPR As More Electric Cars Arrive, What's The Future For Gas-Powered Engines?

SCOTT SIMON, HOST: The Democrats' proposed Green New Deal calls for America to eliminate greenhouse gas emissions from U.S. transportation, an ambitious goal that would require - among many other things - phasing out cars that run on gasoline. That m