单词:acoustic surface-wave filters
单词:acoustic surface-wave filters 相关文章
Windows Vex Bats' Echolocating Abilities 干扰蝙蝠回声定位的烦人窗 Just as humans understand the shape of our surroundings by how light reflects off objects, bats use reflections of sounds they produce insteadwhats called echolocation. But
Broadcast: January 27, 2003 By Jill Moss This is the VOA Special English Development Report. Researchers have discovered a simple answer to a huge problem in developing countries. They have found that
Prisma App Makes Art Out of Photos Pokmon GO is the most popular app in the world right now. But another new app is also getting a lot of attention. And its free. Prisma lets users add filters to photos to interesting, beautiful and strange effect. T
Jack plunched down into thesea, the water was freezing cold, hepumped back up to the surface, choaking and coughing, the lifevest kept Jack closed, but the waves kept hammering at him. Help! Jack shouted. Thought to the twenty foot tiger shark, andmy
Reading and Processing Emails Every day I feel more and more overwhelmed by email. Once I turn on my computer and look at my inbox, I get sucked into reading and responding to emails. I have a personal email account and an email account for work. Wit
I hate junk mail. Im sick and tired of it filling up my InBox. I mean, who believes the stuff written in it? I love the ones that start with Dearest and then tell you how their uncle died during some war and they need your help to transfer $18 millio
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Sunscreened Plants 遮光植物 A NASA researcher is finding that alfalfa plants grow more poorly when exposed to UVB -- ultraviolet B radiation from the sun. Learn more about sunscreened plants -- today on Earth and Sky. JB: This is Earth and Sky. Eart
From VOA Learning English, this is the Health Lifestyle report. In parts of India, it is not uncommon to see people wearing a mask over their nose and mouth. The capital, New Delhi, has some of the world's dirtiest air. The pollution was a call for a
This is the VOA Special English Development Report. Every day, millions of people around the world drink water from wells that are polluted with high levels of arsenic. Arsenic is an element that can be released into groundwater by soil and rocks. Ov
Now one of the things that I do is I don't use any filters, I don't use anything to 我录制的所有视频都没有做过特效处理,什么处理都没有 I try to capture the moment as much as possible as the way that I saw it with my own eyes.
By Liu Enming San Francisco, California 04 September 2007 Pipe picks up sounds created by waves At the tip of a tiny peninsula near San Francisco, California's Golden Gate Bridge stands the Wave Organ, a work of art that allows people to listen to mu
Language Points A guy that's alone in forest kisses a dead body while seven other guys watch. 白雪公主和七个小矮人 Girl wakes up to a stranger on top of her in a bed, but it's cool because he is hot. 睡美人 The one where Jennifer Annisto
Science and technology 科学和技术 Computer vision 计算机模拟视觉 Eye robot 你是我的眼 Poor eyesight remains one of the main obstacles to letting robots loose among humans. 放手让机器人在人类社会自由活动仍存在重大障
DEVELOPMENT REPORT – Cloth Filters Fight Cholera By Jill Moss Broadcast: Monday, February 14, 2005 I'm Gwen Outen with the VOA Special English Development Report. A few years ago, researchers discov
Just as humans understand the shape of oursurroundings by how light reflects off objects, batsuse reflections of sounds they produce insteadwhat's called echolocation. But despite theirexcellent sensing abilities, one type of obstaclevexes the animal
The Way It Goes (Acoustic) - Passenger One man's home is another man's journey Stars shine late and the sun shines early One man's straight and another man's curly It's just the way it goes One man's trash is another man's treasure Rummaging around i
Those waves hitting the sand actually begin far out at sea. And it doesnt take much to get them going. A little wind will do the trick. First the wind blows over the surface of the water, generating the little ripples you can see just by blowing acro
Idiom: Salt in the wound ( make people feel worse ) Hit the book: Source of stress Poverty Isolating time Be up against Financial challenge Guilty Scrape through Grateful When asked about gifts for children under 10, the majority of households said y
I hate junk mail. Im sick and tired of it filling up my InBox. I mean, who believes the stuff written in it? I love the ones that start with Dearest and then tell you how their uncle died during some war and they need your help to transfer $18 millio