单词:american code for pressure piping
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VOICE ONE: This is Mary Tillotson. VOICE TWO: And this is Steve Ember with the VOA Special English program EXPLORATIONS. Today we visit a small museum in the state of Maryland. It is called the National Cryptologic Museum. It is filled with informat
This is Scientific Americans 60-SecondScience. Im John Matson, got a minute? Say you need a diamond. You could go downto the jeweler, or you could put some carbon deep underground and let it sitfor a couple billion years. Or you could hop in a starsh
[00:05.25]American scientists say they have found the strongest evidence yet [00:11.96]linking a breathing problem called sleep apnea to high blood pressure. [00:17.32]They published the study in the Journal of the American Medical Association. [00:2
暂无音频 REMARKS BY THE PRESIDENT ON INTERNATIONAL TAX POLICY REFORM Grand Foyer 11:39 A.M. EDT THE PRESIDENT: All right. Good morning, everybody. Hope you all had a good weekend. Let's begin with a simple premise: Nobody likes paying taxes, particu
EXPLORATIONS - September 18, 2002: National Cryptologic Museum By Paul Thompson German Nazi, American and Japanese coding machines. (Photo - Ed Bunyan) VOICE ONE: This is Mary Tillotson. VOICE TWO: An
AMERICAN MOSAIC - National Women's Hall of Fame Adds New Members, Including Hillary Clinton By Shelley Gollust, Katherine Gypson and Jerilyn Watson Broadcast: Friday, December 02, 2005 (MUSIC) HOST: W
A Visit to Americas National Cryptologic Museum From VOA Learning English, this is EXPLORATIONS in Special English. Im Jeri Watson. 这里是美国之音慢速英语探索发现频道。我是Jeri Watson。 And Im Jim Tedder. Today we visit a small m
This is Scientific American's 60-Second Science, Im Steve Mirsky. Got a minute? Biologists often attempt to construct a genealogy that shows the relationships of all life on earth. One well-accepted effort compares the nucleic acid sequences that cod
This is Scientific American's 60-Second Science,I'm Christopher Intagliata,got a minute? Benny Goodman earned his title,the king of swing as a virtuoso of the clarinet,but now a computer in upstate New York has learned to rip him off.Researchers at
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. It's April 15th. Like many people around the country, you might be feeling your blood pressure rise as you deal with everyone's favorite activityfiling
This is Scientific Americans 60-Second Science. Im Karen Hopkin. This will just take a minute. Think about flying and you no doubt think about air--the wind in your face, the wind at your back, the wind beneath your wings. Now physicists note that li
This is Scientific Americans 60-Second Science. Im Adam Hinterthuer. Got a minute? Heres a possible blood pressure remedy. But its only for those who can stand the heat. Its capsaicin, the active ingredient in peppers like habaneros that should pro
This is Scientific Americans 60-Second Science. Im Cynthia Graber. This will just take a minute. Pasteurization makes food safe by heating microbes to death. But the high temperatures can destroy some nutrients too. A possible alternative? Ultrahigh
Where Do We Come From? 我们来自哪里? Would you like to know where your ancestors came from? British and American scientists may have found answers for you. They have developed a new algorithm to study deoxyribonucleic acid, also known as DNA --
Young Navajos Study to Save Their Language 年轻的纳瓦霍人拯救他们母语 For part of her life, Sylvia Jackson stopped speaking her native language, Navajo. Like many Native American children, she had little chance to speak her language. We
暂无音频 REMARKS BY THE PRESIDENT ON TAXES Room 350 Dwight D. Eisenhower Executive Office Building 12:02 P.M. EDT THE PRESIDENT: Good morning. I decided not to bring Bo today -- because he stepped on my economic speech yesterday. (Laughter.) Good mo
1. 人行道:(B) Pavement;(A) sidewalk 2. 垃圾: (B) Rubbish;(A)trash 3. 足球:(B)football;(A)soccer 4. 地铁(B)Tube(A)subway 5.饼干:(B)biscuit;(A)cookie 6.糖果:(B)sweets;(A)candy 7.句号:(B)full stop;(A)period 8. 秋天:(B)autu
By Melinda Smith Washington 12 September 2007 A recent study indicates that a disturbing number of American children with high blood pressure go undiagnosed. The study has prompted discussion worldwide about whether hypertension among children is jus
还记得陈佩斯在1984年春节联欢晚会上演的那个小品《吃面条》吗?他把滚热的面条吃得可是津津有味呢。你知道“滚热的”在英语中怎么说吗?当然可以
雅思写作教育话题主要考察教育对个人的影响以及对国家社会的影响,但因前者居多,在写作过程中我们需以学生作为重点分析对象,当考察某种教育活动或者教学方法时,往往要关注四项发