单词:viscosity increment
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One in seven Americans lives in poverty. The rate is the highest it's been since 1995. NPR's Tamara Keith brings us the findings of a new Census Bureau report that reveals the recession spared virtually no one. The reason more Americans are living in
Now if you use the right kind of atoms and you get them cold enough, something truly bizarre happens. 如果使用正确的原子,并让其足够冷却,奇迹就会发生。 It's no longer a solid, a liquid or a gas. It enters a new state of matt
This is Scientific Americans 60-Second Science. Im Cynthia Graber. This will just take a minute. Usually, we trust common sense to solve problems. Is a runny mixture too thick? Add some fluid. Thatll make it runnier. Except when the fluid makes it th
232. A vocation for the vigorous 充满活力者的职业 vigor-vocational The vigor and vitality that one must possess to be a doctor is amazing. Perhaps many have the vision, but only the truly vigorous can handle such a vocation. Virtuosity is a m
Vaccine - a planned exposure to an antigen in order that memory B lymphocytes can retain a memory for it. In practice the organism carrying the antigen is either killed or modified so that it does not
By Mil Arcega Washington 25 May 2007 Technology and high gasoline prices are helping to coax hard-to-extract oil from California's oil fields. Production at some of the state's older oil fields is expected to dry up in about 25 years, but Chevron say
A killer bug spreading across the globe like wildfire sounds like something out of a bad sci- fi film. But while this is still the stuff of fantasy, microbiologists are concerned about the news of an enzyme with the potential to convert all bacteria
You might think frogs catch insects cause their tongues are sticky. But why is the tongue sticky, and how does it actually adhere to these insects at these very high accelerations? 也许你认为青蛙能捕食昆虫是由于舌头很粘的缘故。但
Frog Spit Behaves Like Bug-Catching Ketchup 青蛙唾液竟然类似番茄酱? You might think frogs catch insects cause their tongues are sticky. But why is the tongue sticky, and how does it actually adhere to these insects at these very high acc
The results of this two-tier system have been meagre so far. The frenzy in the biggest cities stems from the central banks steady loosening of monetary policy over the past 18 months. Although warranted from an economic perspective, it was inevitable
By Greg Flakus Houston, Texas 17 May 2007 High energy prices, coupled with rising demand, are putting pressure on the oil and gas industry worldwide. Many companies are finding and developing new, underwater fields. More than 67,000 representatives o
Agriculture Report - Tomato's Genetic Secrets Are Peeled Away This is the VOA Special English Agriculture Report. Scientists have made a genetic map of the tomato. Tomatoes are second only to potatoes as the world's most valuable vegetable crop. Eigh
世博会正式开园,园内有不少独立展馆。顾名思义,独立展馆即单独设管的意思。比如说古巴,以往都是与其他拉美国家合用一个展馆,而在此次的上海世博会上,首次设立独立的展馆。那么
The chains of habit are generally too small to be felt until they are too strong to be broken. - Samuel Johnson Editors note: This is a guest post from Mary Jaksch of Goodlife Zen. Have you ever had problems establishing a new habit? Maybe I should a
How to Develop Running As a Lifestyle One of the greatest physical and mental challenges on the planet is to complete a Marathon. While the thought of running a little over 42 km is daunting, for most healthy people this is an achievable goal. The fi
The rollout of the gleaming craft marks Virgin Galactic's return to the race to become the world's first major private space tourism company. The new passenger spacecraft is expected to take thrill-seekers, researchers and commercial customers on sho
The first one is very simple: experience bars measuring progress 首先看一个简单的:用经验值条量度进程 something that's been talked about brilliantly by people like Jesse Schell earlier this year. 它曾经被人精彩地讨论过,比