单词:laser height accuracy
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By Carol Pearson Washington 30 April 2008 Ten years ago, the U.S. Food and Drug Administration approved LASIK, eye surgery with a laser that enables people to see without glasses. But about five percent of LASIK procedures fail, and those patients ca
CAR INSURANCE laurance-I need to get car insurance.You got any ideas? Soony--- Well,you could try my company.It seems to have fair rates. Laurance-Do they insure older cars? Soony--- As far as I know,
When Henry ford decided to produce his famous v-8 motor, he chose to build an engine with the entire eight cylinders cast in one block, and instructed his engineers to produce a design in one for the engine. The design was placed on paper, but the en
EXPLORATIONS - The History of the Laser Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can
New Laser Device Helps Parkinson's Patients Walk 新激光设备帮助帕金森患者重获行走能力 Parkinsons disease slowly destroys the brains ability to control the muscles, depriving the patients of their mobility. Researchers at the Mayo Cl
This is Scientific Americans 60-Second Science. Im Adam Hinterthuer. Got a minute? Netflix isnt satisfied with the way its system recommends new movies to customers based on their viewing habits. So the mail-order DVD rental company has offered outsi
This is Scientific American's 60-Second Science, I'm Christie Nicholson. Got a minute? Oh! Shoot. We might think that women are not as adept as men at wielding heavy tools, like say, hammers, according to popular stereotypes. But it turns out women m
[00:27.56]A leaked French intelligence document raises the possibility [00:31.35]that Osama Bin Laden died of typhoid, [00:34.51]but President Jacques Chirac said that [00:38.12]the report was in no way confirmed [00:41.24]and officials from Kabul to
UNIT 24 RADIO PROGRAMS ( Ⅳ ) Lesson 47 Part Ⅰ UNIT 24 RADIO PROGRAMS ( Ⅳ ) Lesson 47 Part Ⅰ Warming-up Exercises Spot Dictation: Successful Predictions In 1865 the famous French author Jules V
Describing Accuracy and Inaccuracy Rona: This is impossible. Im never going to hit the target. Why is it that Im the only one in this archery class who has no aim? Leonardo: Youre doing fine. I can tell youre new to this. It takes some practice to de
The United States Navy has demonstrated a new laser weapon operating in the Persian Gulf. The Laser Weapons System, or LaWS, is deployed on the USS Ponce transport ship. A live test firing of the weapon was recently carried out for Cable News Network
This is All Things Considered. I'm Michelle Norris. Phone calls from Sweden woke up two American scientists this morning, John Hall and Roy Glauber. They will share the Nobel Prize for Physics with a German Researcher Theodor Haensch. All three worke
The History of the Laser Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can go from the sci
EXPLORATIONS - The Laser: Futuristic Science Found at Your Local Store MARIO RITTER: Welcome to EXPLORATIONS in VOA Special English.Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one
By Paul Sisco Washington 14 November 2007 At the McDonald Observatory in western Texas, a unique space program has been quietly underway for more than 30 years. It is called the Lunar Laser Ranging Program. VOA's Paul Sisco has more. Research scienti
Team China has leveled in a 0-0 draw with Hong Kong in the qualifiers for the 2018 World Cup on Thursday in Shenzhen. Goalkeeper Wang Dalei offered these thoughts on the game. We weren't very lucky. We hit the post for once and the crossbar twice. Pe
[00:39.12]height 高度 [00:43.33]length 长度 [00:47.42]mathematician 数学家 [00:52.35]be required to do something 被要求做某事 [00:58.34]measuring tape 卷尺 [01:04.45]A team of mathematicians were required [01:06.76]to measure the heigh
第一篇作文(无论是书信或图表)评分标准由四个方面组成。第一个是Task Achievement(任务完成),第二个是Coherence and Cohesion(内容连贯与篇章衔接),第三个是 Lexical Resource(词汇资源),第四个是 Gra