单词：thermal class for electric machine insulation
单词：thermal class for electric machine insulation 相关文章
In the late 1960's, many people in North America turned their attention to environmental problems, and new steel-and-glass skyscrapers were widely criticized. Ecologists pointed out that a cluster of
新东方背诵文选
13 Skyscrapers and Environment In the late 1960's, many people in North America turned their attention to environmental problems, and new steel-and-glass skyscrapers were widely criticized. Ecologists pointed out that a cluster of tall buildings in a
英语范文背诵20篇
The Federal Government will try again this week to get its changes to private health insurance passed by parliament. It wants to means test the rebate for private health insurance and increase the Medicare surcharge for high-income earners who don't
澳洲ABC新闻快递2010年
Good morning, I'm Melissa Long here at the CNN center in Atlanta. It's a Monday morning. It's the 27th of July. Here is a look at some of the stories making news this morning. And an American who joined Al Qaeda and then plotted to kill former Presi
CNN2009年(七)月
Can we help the environment by being green? We all know that humans are damaging the environment, but what can we do about it? Some people are trying to do their bit to try to be more environmentally friendly . Local councils in Britain encourage ce
Take Away English
Good morning, I'm Melissa Long here at the CNN center in Atlanta. It's Thursday, July 16th and here's a look at some of the stories that are happening NOW IN THE NEWS. Judge Sonia Sotomayor will begin a final round of questioning from senators this
CNN2009年(七)月
1. President Bush meets Pope Benedict XVI defending his humanitarian record after the Pope expresses concerns about what he calls the worrisome situation in Iraq. On the streets of Rome, thousands of anti-American protestors denounced Bush. 2. It's a
美联社新闻一分钟2007
This is the VOA Special English Development Report. Today we bring you a new take on an old tale. It's the story of the three little pigs and the big bad wolf that blew down a house made of straw and one made of sticks. The only house left standing
VOA慢速英语2009年（十）月
Airtight Houses Lower Energy Costs 密封房屋降低能源消耗 We may not be aware of it, but ordinary family homes in the U.S. and, indeed, the rest of the world are not energy-efficient. Most of their energy goes to heating and cooling, and a lo
VOA标准英语2015年(十二月)
听力题目： 9. (A). The student asked about insulation. (B). The student insulted the author. (C). The author walked by the student. (D). The author is going bald. 10.(A). Shall we have lunch there again sometime? (B). Do we have to finish our lu
托福听力单句训练
As a greater proportion of Britons live alone, the demand for one bedroom, space efficient solutions is increasing. The UK Ideal Home Exhibition has the latest ideas to maximize space in smaller homes and energy saving ideas. Our reporter Wang Xiao h
英闻天下
Cars And Lightning You may have heard that your car is a safe place to be in a thunder storm, and this is true. You might not know the reason for this, however.Well learn exactly what would happen if lightning struck your car. At first you might thin
英语时差8，16
Solar power 太阳能 The third way 第三种方法 A new method of making electricity from sunlight has just been tested 一种从太阳光得到能源的新方法正在尝试 AT THE moment, there are two reliable ways to make electricity from sunli
经济学人综合
By Brian Wagner Miami 22 October 2007 NASA officials say possible rains and low clouds may force the delay of Tuesday's scheduled launch of the space shuttle Discovery. In Miami, VOA's Brian Wagner reports the shuttle is set to deliver a new module t
2007年VOA常速英语（十月）
Nearly a year after the global financial crisis peaked, an economic stimulus program that Australia says was key in easing its recession, is getting attention and praise. The program is aimed at energy efficiency and has even had an impact on jobs in
VOA标准英语2010年(二月)
PV solar technology is more complex. When sunlight hits a PV cell, electrons in the cell are knocked out of their orbits. Electric fields channel the electrons in a current used to generate electricity。 Unlike thermal solar panels, PV technology is
英语时差8，16
These days kids have styrofoam to keep soup hot. But back in the day, there were thermoses. One of their drawbacks was that since their insides were made of glass they were pretty easily broken when dropped. The popping sound they made when they brok
英语时差8，16
Reentry Heat [Why does a space shuttle get hotter on reentry than on liftoff?] 能想象航天飞机穿越大气层时受到摩擦产生的热量有多惊人吗？来一起听听吧。 M:Dolle,we now know that the space shuttle Columbia burned up whe
英语听力文摘 English Digest
Skyscrapers and Environment In the late 1960's,many people in North America turned their attention to environmental problems,and new steel-and-glass skyscrapers were widely criticized.Ecologists pointed out that a cluster of tall buildings in a city
双语有声阅读
To get a handle on the value of this model equation lets go back to the ice cream scoop. The end result is obvious to our intuition, that the ice cream will eventually melt completely, because we know heat naturally flows from warm to cold. But what
英语时差8，16