单词：DBTT (ductile-brittle transition temperature)
单词：DBTT (ductile-brittle transition temperature) 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
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
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
Larry在咖啡馆里碰见了李华。他们会用到两个常用语：take someone under your wing和take someone for a ride。 Larry: Hey, there you are, Lihua。 LH: (Sounding tired) Oh, hi Larry。 Larry: I haven't seen you since last weekend. Wh
英语日常口语
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)
Cold front to drop temperatures in north China BEIJING, Oct. 20 (Xinhua) -- China's meteorological authorities on Saturday forecast strong winds and temperature drops in most regions in the north due to a sweeping cold front. On Saturday and Sunday,
英语新闻
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
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)
How annoying would that be? Must try harder. 多么不可思议。你要努力学习。 Being sent to bed by his dad, you know, to Shakespeare, Go to bed, now! And put the pencil down. 你能想象他父亲边说边把他抱上床，现在该睡觉了，
TED演讲教育篇
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
罩着某人 Take Someone Under Your Wing Take Someone For a Ride 在中文里，我们常常听到罩这个词，大哥罩着小弟，男生罩着女生... 那你知道它的英文表达么？来看看Larry在咖啡馆里碰见了李华的情景对话
英语口语
HARI SREENIVASAN: Now we turn to president-elect Trump's transition to the White House and how his team is tackling the handover of executive reins. For that, we are joined by Alex Isenstadt of Politico. So, Alex, you're reporting on this every today
PBS访谈社会系列
饶舌:Tech N9NE - Check Yo Temperature 相关介绍 ：2008年9月是Tech N9NE事业的一个里程碑，他的双CD专辑《Killer》突破100万张的销售记录。2009年4月7日，Rock The Bells 2009 Festival邀请他来做演出，今年10月的
节奏布鲁斯
英语面试,听起来很可怕的东东.第一次去面试的人确实会觉得可怕. 这里我们就来好好学习一下英语面试中会遇到的各种各样的问题: 其中最难回答的莫过于薪水和跳槽原因等问题的回答.确实是
实用英语