单词：glass transition temperature (tg)
单词：glass transition temperature (tg) 相关文章
Cells cannot remain alive outside certain limits of temperature and much narrower limits mark the boundaries of effective functioning. Enzyme systems of mammals and birds are most efficient only withi
新东方背诵文选
Dialogue 15 laurance--Is there anything I can do?I'd like to help in some way if I can. soony--I can't think of anything at the moment. laurance--Well,maybe I could run errands or something. soony--Yo
英语经典听力对话
It was 10:05 Friday night. Her workweek was finally over. Her 40-minute ride on the B train was finally over. She felt exhausted, even though shed been sitting during the whole ride. The subway station escalator wasn't running. She trudged up the 49
英文短篇故事（纽约）
Heres something we tend to take for granted: drop a few ice cubes into a glass of water at room temperature, and in a few minutes the water will cool. How does this work? 有件事情我们总觉得理所当然：室温下把一些冰块放入水中，
初学者听力文摘精选
How Does Ice Cool Drinks? Heres something we tend to take for granted: drop a few ice cubes into a glass of water at room temperature, and in a few minutes the water will cool. How does this work? Heat is a measure of molecular activity: the faster a
英语听力文摘 English Digest
Grammar Girl here. Today, Bonnie Trenga will help us choose better transition words. This article could make you a tad hungry, because today were comparing the art of writing to the art of making a sandwich. In fact, just for today, we might need to
英语语法 Grammar Girl
In 1963, President John Kennedy gave a famous speech at American University. In the speech, Kennedy said the following lines: Our problems are manmade; therefore, they can be solved by man. And man can be as big as he wants. No problem of human desti
2017年VOA慢速英语(九)月
At 2 a. m, Mrs. Culkin was convinced that she had heard a prowler in the living, room. Tiptoe down-stairs, she told her husband. Don' t turn on the lights. Sneak up him before he knows what's happeningDutifully Mr. Culkin put on his robe. Just as he
趣味英语
A new survey of Internet security says the computer attacks are increasingly being used to make money, rather than simply to make mischief. Virus writers are finding also ways to amplify their powerthey're renting out robot armies of computers under
2005年NPR美国国家公共电台
Monday's meeting at the White House between President George Bush and President-elect Barack Obama is the latest symbol of a presidential transition that appears to be moving ahead smoothly, at least initially. VOA National correspondent Jim Malone
VOA标准英语2008年(十一月)
U.S. President George Bush and President-elect Barack Obama will meet at the White House on Monday. As VOA's Paula Wolfson reports, Mr. Bush says they will discuss the major issues facing the nation. President Bush assembled members of his Cabinet t
VOA标准英语2008年(十一月)
Some bacteria have adapted to super cold environments for millions of years. And scientists have isolated some of the essential genes that allow bacteria to tolerate their harsh living conditionsbecause these same genes might help in the creation of
英语杂谈
By Brian Wagner Miami 20 June 2008 U.S. prosecutors have announced a massive crackdown on mortgage fraud that has resulted in losses of about $1 bilion around the country. In Miami, VOA's Brian Wagner reports the schemes have worsened the problems f
VOA标准英语2008年（六月）
Both U.S. President George Bush and his successor, Barack Obama, are emphasizing the importance of a smooth transition, so Mr. Obama can tackle the country's economic problems as soon as he takes office on January 20. VOA's Kent Klein reports from W
VOA标准英语2008年(十一月)
U.S. President-elect Barack Obama is moving his White House transition forward, as political turmoil builds over the selection of his successor in the United States Senate. The governor of the state of Illinois stands accused of trying to sell the S
VOA标准英语2008年(十二月)
今天我们要学的词是transition。 Transition, 是过渡的意思。A smooth transition, 就是平稳过渡。古巴总统卡斯特罗宣布辞去国务委员会主席的职务。美国总统布什表示，希望古巴能由此开始向民主过渡
英语每日一词
今天我们要学的词是transition。 Transition, 是过渡的意思。A smooth transition, 就是平稳过渡。古巴总统卡斯特罗宣布辞去国务委员会主席的职务。美国总统布什表示，希望古巴能由此开始向民主过渡
英语单词荟萃
By Al Pessin Pentagon 19 October 2007 The U.S. military's effort to rebuild major infrastructure in Iraq will be winding down during the coming year, leaving the Iraqi government to fund the effort and to find engineers capable of handling the projec
2007年VOA常速英语（十月）
NATO's secretary-general says foreign forces in Afghanistan will remain on combat duty during the scheduled transition to Afghan security control in 2014. That statement by Anders Fogh Rasmussen came after U.S. Defense Secretary Leon Panetta said Ame
英语新闻
This extra jostling pushes the atoms farther apart, causing the whole substance to slightly increase in size. If the substance cools off, its atoms stop pushing against each other so vigorously. This makes the substance shrink again. This connection
英语时差8，16