单词：acidic resins
单词：acidic resins 相关文章
This is Scientific American's 60 Second Science. I'm Steve Mirsky, got a minute? The Meridiana Planum region of Mars once had water that was really soft and highly acidic, conditions in incredibly hostile to any life forms that we know about. So any
Scientific American(二)月
Recycling Plastics When plastic containers are recycled, they are first cleaned, then ground into tiny pellets and put into a flotation tank. This separates out the various plastic resins from other waste material. Once they are separated out, the pl
英语时差8，16
Hungry Lasagna So you made lasagna last night, and it was delicious. You saved the leftovers by wrapping aluminum foil over the top of the pan, and putting it in the fridge. When you get hungry today, you go to look for that lasagna, but it looks lik
英语听力文摘 English Digest
Fish raised in the more acidic seawater that would result from higher carbon dioxide levels forget to flee predators. More carbon dioxide emissions lead to more CO2 dissolving in the oceans, which turns the water acidic. Those sour seas slow the grow
60秒科学
More carbon dioxide emissions lead to more CO2 dissolving in the oceans, which turns the water acidic. Those sour seas slow the growth of corals. And it turns out acidic seawater also makes clownfish and damselfish suicidally bold and reckless, accor
Scientific American(七)月
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Landfills produce methanewhich can be valuable as an energy source. But scientists haven't known why landfills make so much methane. The solid waste in
Scientific American(四)月
This is Scientific American 60 second Science, I am Sophie Bushwick, got a minute~ Theyre called hydogels: Jell-O-like materials made of networks of long-chain molecules in water. And theyre as flexible as living tissue. But hydrogels could not recov
Scientific American(三)月
StudyFindsHighLevelsofBPAinCannedFoodforKids The industrial chemical BPA has been used to make hard plastic bottles and the lining of food cans for decades. After studies indicated that the chemical could play a role in cancers, heart disease and abn
VOA标准英语2011年(九月)
There is a curse that has plagued humanity since ancient times. 从古代起就有一种诅咒一直让人类饱受折磨。 The Greeks fought it by chewing aromatic resins, while the Chinese resorted to egg shells. 古希腊人通过咀嚼芳香树脂
TED演讲教育篇
That dress looks perfect right off the rack, and that crisp button-down shirt is never going to be any brighter or whiter than the moment you buy it. So is it really necessary to go to all of the trouble of washing those brand-new garments before you
阅读空间
如果你爱喝葡萄酒或经常遇到要喝葡萄酒的场合，学几句高大上的品酒英语尤其重要。 品葡萄酒本节课的重点词汇: 1) wine tasting 葡萄酒品酒会2) tasting flight 品酒序列3) Cabernet Sauvignon 赤霞珠4)
美国文化脱口秀
This week on Why Tell Me Why, we are finding out why the oceans are so salty. So the oceans are salty because the oceans have been around, lets say, for over five hundred million years. And over the course of time what we found out is that weve alway
自然百科2009年
Amygdala's Acidic Aspiration Answer A study in the journal Cell shows that the buildup of carbon dioxide when we stop breathing causes a pH change that signals proteins in the brain to force us to inhale. Karen Hopkin reports. Maybe its happened to y
60秒科学
Preserved bodies help doctors understand diseases that have plagued humans for thousands of years Naomi Seck | Washington, DC 05 May 2010 Scientists say looking back can help them look forward, by revealing how the disease evolved over time. Related
VOA标准英语2010年(五)月
Don comes up with another entrepreneurial venture, but Yael straightens him out just in time. [Thunder] Y: What are you doing outside, Don? It's about to rain. D: I'm setting up bottles. Y: I can see that. But why? D: For my new business venture: bot
英语时差8，16
Acid Water Yal: What are you doing outside, Don? It's about to rain. Don: I'm setting out bottles. Y: I can see that. But why? D: For my new business venture. Bottled rainwater! Y: As in living plastic bottles out in the rain and then selling them as
英语听力文摘 English Digest