单词：doped-silica clad fiber
单词：doped-silica clad fiber 相关文章
Oh ,let me think for a moment . [00:03.79]噢，让我想一会儿。 [00:07.58]I haven't a clue ,I 'm afraid. [00:12.15]我没有线索，很抱歉。 [00:16.72]I'm not really sure ,sorry . [00:20.87]我真说不准。对不起。 [00:25.03]I'm terr
零距离李阳疯狂英语口语
We're in and ready to go. It looks like a vehicle(车辆) out of the Jetsons cross with the Flintstones. It's very comfortable. I, I, er, tell people it's like riding in your long chair. Running smoothly like a mini-electric car fueled by pedal（踏板）
英语讨论
[00:22.38]Spooky Pursuing Motorists [00:32.43]追赶我的开车幽灵 [00:43.40]Over the next half hour, there were four more 'close- calls', [00:47.80]but I think that I managed to remain hidden well [00:51.38]enough behind trees and bushes [00:54.06]and b
英语灵异故事
Your nose may be the first place you think of as a source of mucus. But mucus is a major player in your gut, too. There's antimicrobial peptides and proteins that are present in there. Bacteria live in there and forage on the carbohydrates. And it's
2016年Scientific American(十一)月
This is Scientific Americans 60 second Science, I am Christopher Intagliata, got a minute? You know what fiber's good forto keep things moving smoothly downstairs. But it's not just for staying regular. Fiber can boost the number of beneficial bacter
Scientific American(六)月
Jessica在北京学中文，她的中国朋友要是遇到了不知道用美语怎么说的词，就会来请教她。今天是吴琼要问的：暴露。 WQ: Jessica, 明天我要去面试，得好好打扮打扮，你帮我参谋参谋? Jessica：没
美语怎么说
3、Are models necessary for auto shows?- China Daily 车展真的需要车模吗？ Editor's Note: The organizing committee of the Shanghai Automotive Exhibition is considering canceling the appearance of models at this year's auto show. Are models
英语PK台
Plant Self-defense Plants may appear to be helpless in the face of hungry,toothy animals but many plants have evolved interesting systems of self-defense. Coarse meadow grasses are a good example. If you run your finger along a blade of coarse grass,
英语听力文摘 English Digest
Sometimes simple changes can bring about big results. When it comes to losing weight, more often than not, it's all about numbers. 有时简单的转变会带来大大的收获，每当说到减肥这个话题时，往往讲究的都是些数字。 I
实用英语
AS IT IS 2015-07-14 Silica Sand Mining Worries Communities 美国硅砂矿引发社区担忧 The United States is increasing production of oil and natural gas through a process known as fracking. This process is sometimes called hydraulic fracking be
2015年VOA慢速英语(七)月
By Melinda Smith Washington 18 July 2007 We are going to find out about two studies on breast cancer. One studied whether a diet very high in fiber and low in fat could reduce the risk of recurring breast cancer. Another study focused on women with a
2007年VOA标准英语（七月）
RACHEL MARTIN, HOST: The Food and Drug Administration is set to decide soon on a matter that could help you rethink fiber. Yeah, we're talking about fiber. We're told to eat a whole lot more of it. It's good for us, right? But what exactly counts as
2017年NPR美国国家公共电台10月
AILSA CHANG, HOST: Despite mounting evidence and a stream of dire warnings, federal regulators and mining companies failed to protect coal miners from toxic dust. MARY LOUISE KELLY, HOST: NPR and the PBS series Frontline spent more than a year lookin
2018年NPR美国国家公共电台12月
Jessica在北京学中文，她的中国朋友要是遇到了不知道用美语怎么说的词，就会来请教她。今天是吴琼要问的：暴露。 WQ: Jessica, 明天我要去面试，得好好打扮打扮，你帮我参谋参谋? Jessica：没
英语新闻
You might not think there would be that many people in the world prepared to devote lifetimes to the study of something so inescapably low key, 你或许会认为，世界上不会有多少人愿意花毕生的心血来研究那个不起眼儿的东西
万物简史
Top 15 Diet Hacks Youve read and enjoyed the Top 20 Motivation Hacks and Top 10 Productivity Hacks and now you want hacks to eat healthier and to get a flat tummy. Well, Zen Habits has never been one to hold back on you, so at reader request, here ar
阅读空间
QINGDAO, Shandong, Dec. 26 (Xinhua) -- China's largest rail vehicle maker, CSR Corp. Ltd, over the weekend launched its first test train that features speeds reaching up to 500 km per hour. The six-car train with a fairshaped head is the newest in th
英语新闻