单词：surface acoustic wave pressure sensor
单词：surface acoustic wave pressure sensor 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
2017年Scientific American(九)月
Conditions on Mars were so harsh that it was hard to imagine any life surviving there. The idea of sophisticated aliens was wiped out. We know that conditions on Mars today are not very good for life.
火星生命
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
汪培珽儿童英文分级书单《神奇树屋》
When the first shots were fired at JFK's murder case,police couldn't immediately locate the gunman based on the sound alone. Today, the technology exists for them to do it with their smart phones,less than a second after the first shot. Here's how, m
Scientific American(四)月
The air thins and they begin to lose the protective weight of the miles of air above them. The pressure is dropping, when you finally get to the stratosphere, and to the altitude we like to work at, it's only one one hundredth that of it's on the gro
探索与发现2014年
Why do golf balls have dimples(酒窝, 涟漪)?So that they look cute? NO! Because the dimples maximize the distance golf balls travel. Dimpled balls travel up to four times farther than smooth-surfac
奥运英语
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
Scientific American(四)月
Cohesion-tension Theory Atmospheric pressure can support a column of water up to 10 meters high. But plants can move water much higher; the sequoia tree can pump water to its very top more than 100 meters above the ground. Until the end of the ninete
英语小短文
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
2007年VOA标准英语（九月）
In contrast, Jupiter and Saturn are all atmosphere. Unlike Earth, Jupiter doesnt really have a solid surface that you could stand on and then have your head up in the atmosphere looking at the clouds. Its just a giant, giant gas ball. Only one other
探索与发现2014年
Our chemistry, our very nature, our metabolism is completely shaped by the atmosphere. To appreciate our atmosphere, well rise through its layers, travelling from the planets surface, miles up above mountains and the clouds, to the very edge of space
探索与发现2014年
Kelly Moore and her friends went to the beach. Kelly did not know how to swim. All her friends were having fun in the water. Come in! they kept shouting. Stop being a chicken! she heard them say. Kelly hated being teased. She finally decided to jump
英语第4级听力-English Level 4
Well then, when you dive under the waves, Ned, for every thirty-two feet of water above you, your body is tolerating the pressure of one more atmosphere, in other words, one more kilogram per each square centimeter on your body's surface. 尼德兰，好
《海底两万里》中英双语有声读物
The device is a tiny sensor, implanted through a catheter in the heart's pulmonary artery. The procedure takes just seven minutes. The patient passes a wand over his chest, collecting data on heart pressure. That data is sent electronically to the do
VOA标准英语2010年(六)月
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
2018年科学美国人1月
1. I know that every job has its own kind of pressure. 我知道每份工作都有自己的压力。 还能这样说： For me, it is job that has some kind of pressure on any person. I believe that pressure is evitable for people who have a job. 应用
情景会话口袋书人际篇
The Pike River Mine Commission is still listening to evidence about why 29 men died at the mine last November. Each day, we hear about things that were not right at the mine. There were money problems. The mine was losing money and the men were under
新西兰英语
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
英语时差8，16
In the days of diving suitsthe sort that were connected to the surface by long hoses, 在使用潜水衣即用长管子连接水面的那种装备的年代， divers sometimes experienced a dreaded phenomenon known as the squeeze. 潜水员有时候会
万物简史
Maybe. A change in barometric readings may be part of the reason: Atmospheric pressure often drops right before bad weather sets in; this shift could cause body tissue to expand, which can lead to swelling and pain. 也许吧，气压变化有可能是
英语听力广播—Listening