单词：ratio of physiological dead space to tidal volume
单词：ratio of physiological dead space to tidal volume 相关文章
[00:00.00] [00:00.00]73 Color and Life [00:04.52]Color can not only reflect one's personality but also influence one's mood. [00:12.43]What color do you like? Do you like yellow, orange or red? [00:18.94]If you do, you must be an optimist, a leader,
每天一课英语口语365
WASHINGTON A massive renewable energy project could change the seascape of the Welsh city of Swansea in coming years. The plan is to encase the city's lagoon in a horseshoe-shaped causeway that will serve as a giant tidal generator. The four-year pro
VOA标准英语2017年(三月)
The four scientists -- three men and one woman -- are taking part in this experiment designed to determine how well food, water, and oxygen can be used and recycled under controlled conditions. The test of the controlled ecological life support syste
2016CRI中国国际广播电台
Every two weeks, on the full and new moons, the sun, moon and Earth fall along a nearly straight line. The combination of gravitational forces in this arrangement creates large swings in the tides. But the celestial alignment affects more than the oc
2016年Scientific American(九)月
This is Scientific American 60-second Science,I'm Gretchen Cuda Kroen,got a minute?Sharing syringes is a big no-no.Despite the warnings,needles sharing among injection drug users are still a significant cause for the spread of HIV and other infectiou
Scientific American(一)月
You've heard about them, and maybe seen them in movies as they [dict]smash[/dict] apart ocean liners, or wash whole cities into the sea. What causes[dict] tidal [/dict]waves, and how are they different from the ordinary waves that wash against our co
英语时差8，16
Rapper Jay Z has restarted a music subscription site to provide a new kind of streaming service. Jay Z has bought and re-launched the service called Tidal, which was initially launched last October. Many of the music industry's major stars have also
英语商业新闻
图片 by Jason Marshall Some math is functional. Some math is fun. And some math is simply stunning. If that last description sounds improbable to you, then today just might change your mind. Because now that weve covered enough ground, were going t
数学英语
图片1 图片2 by Jason Marshall Despite many peoples assumption to the contrary, math is undeniably artistic. It takes a tremendous amount of creative muscle and artistry to devise mathematical solutions. And, as made evident by their frequent batt
数学英语
Each year at the start of spring, more than 1 million people travel to Washington, D.C., for one major reason: the cherry blossoms. Most of the travelers visit an area known as the Tidal Basin. During peak bloom, the Tidal Basin is bursting with colo
2018年VOA慢速英语(四)月
Washington's Cherry Blossoms Signal the Start of Spring 华盛顿樱花再度盛开 EDITOR'S NOTE: This year, the U.S. National Park Service turns 100. Americans 28th President, Woodrow Wilson, formed the National Park Service in 1916 to protect the
2016年VOA慢速英语(三)月
NASA Art Captures 50 Years of Exploration One of the nation's most prolific art collectors is the U.S. space agency. For nearly a half-century, NASA has commissioned artists to document its missions and projects. Seventy of the 3,000 works in its col
VOA标准英语2011年(六月)
BEIJING, May 13 (Xinhuanet) - China's central bank announced on Saturday it would lower the reserve requirement for commercial lenders by 50 basis points, the second time it has taken such action this year to inject more market liquidity and shore up
英语新闻
9 Clutter Clearing Tips for Good Feng Shui Clutter clearing in the bedroom can have health benefits. We all know that clutter clearing ALWAYS improves the feel of a space. But, many people ask me, Where should I start? Following are 9 tips to help yo
阅读空间
Four Chinese volunteers who have been living inside a sealed capsule in Shenzhen completed their 180-day survival experiment last Wednesday. 4名中国志愿者于上周三结束了在深圳一个密封舱内的180天生存试验。 The experiment is
英语新闻
1. Secretary of State John Kerry says major world powers have agreed on what sort on nuclear deal to offer Iran. That nation refused to accept it during talks in Geneva. 2. Officials in the Philippine say the number of dead in Fridays Typhoon can rea
美联社新闻一分钟2013(十一月)
China's sex ratio is quite worrying nowadays. According to census data, China's sex ratio at birth was 108 males to every 100 females in the early 1980s, only slightly above the natural rate of 103 to 107. In 2000 the ratio was 116.9 males to 100 fem
英闻天下
So here's a note that I left by the fireplace and ash from all the notes that I've burned not long ago. It's great how severing all these ties can make things right At least less wrong than they ever were before. The days I'd sit and sieve by the win
美国乡村音乐
Once again the migratory birds, the Godwits are arriving in New Zealand from Alaska. They arrive in groups, usually the second or third week in September. Because of the earthquake damage to the Cathedral, Christchurch cannot ring the Cathedral bells
新西兰英语