单词:olefin polymer oil
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An important new industry, oil refining, grew after the Civil war. Crude oil, or petroleum - a dark, thick ooze from the earth - had been known for hundreds of years, but little use had ever been made
This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Are your car bumpers riddled with scars from encounters with tight parking spaces? Did the furniture movers scratch your floor? Wouldn't it be great if t
This is Scientific American's 60-Second Science. Im Cynthia Graber. This will just take a minute. Buildings consume about a third of the energy and two-thirds of the electricity in the U.S. Roofs are a good place to try to cut those figures. Because
Most of us blink without thinking. But people whove sustained strokes or combat injuries can lose their ability to blink. Which is important for lubricating and cleaning the eye. Surgery is an optiona small piece of muscle transplanted from the leg c
A merchant sent his son to learn the Secret of Happiness from the wisest of men. The young man wandered through the desert for forty days until he reached a beautiful castle at the top of a mountain. There lived the sage that the young man was lookin
Lowering the Ceiling on Roof Energy Losses Buildings consume about a third of the energy and two-thirds of the electricity in the U.S. Roofs are a good place to try to cut those figures. Because traditional black asphalt roofs heat up in summer and s
This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute?. [Spray sound.] Killing bugs? No. [Spray sound.] Deodorizing the bathroom? No. [Spray sound.] Checking for explosives, yes. Because chemists at the University of Califor
Patients undergoing coronary bypass surgery need implants of new, healthy blood vessels. So do those who receive repeated hemodialysis due to kidney failure. The best option is to use the patient's own veins or arteries, but thousands of patients don
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Solar cells convert sunlight to electricity. But they don't take advantage of all that solar heat, thereby missing out on the majority of the solar ene
An elderly woman decided to have her portrait painted. She told the the artist.... .....Paint me with diamond earrings, a diamond necklace, emerald bracelets(绿宝石手镯), a ruby(红宝石) broach, and gold Rolex(劳力士手表). But y
The price of oil has dropped around 20 percent in recent weeks, but remains more than double what it was just a couple of years ago. The high price has given oil companies the incentive to revisit old fields long ago abandoned as unprofitable. As VO
Research Breakthrough for Biodegradable Tires? 研究人员研发完全可降解轮胎 Researchers say they have created a new synthetic rubber that could be used to make biodegradable tires. A team at Texas AM Universitys campus in the Gulf nation o
'Smart' Bandages Could Heal Wounds More Quickly 智能绷带有助更快治愈伤口 Simple bandages are usually seen as the first line of attack in healing small to moderate wounds and burns. But scientists say new synthetic materials with embedded
Rights Group Rebukes Angola for Alleged Missing Oil Revenues Leah Krakinowski A leading human-rights group says the Angolan government cannot account for more than $4 billion in missing oil revenue ,
More than 2,000 representatives of world oil and gas companies, academics and industry experts are in Houston this week for the 30th annual conference(会议) sponsored by Cambridge Energy Research Associates, or IHS-CERA. With prices rising, partly
The global oil markets experienced another blow on Monday, with prices hitting their lowest in five and a half years. US crude at one point hit below $50 a barrel, while Brent dove under $53. This was related to the latest signs of oversupply. Russia
HOUSTON, Sept. 7 (Xinhua) -- British oil giant BP announced Wednesday it had a major oil discovery in the Gulf of Mexico. An appraisal well the company drilled in a previously untested northern segment of the Mad Dog field in the Gulf of Mexico found
TEHRAN, Feb. 26 (Xinhua) -- Iran has refused to deliver oil to Greece in Persian Gulf, the local Fars news agency reported on Sunday. The Islamic republic refused to deliver a shipment of 500,000 barrels of crude oil to one of the refineries in Greec
Saudi Arabia is signaling that it is going to boost its supply of oil on its own after failing to convince other oil producers to jointly agree to more production. Several news agencies reported Saturday that the Saudis could increase their oil produ
NEW YORK, July 13 (Xinhua) -- Crude prices rose on Friday as supplies tended to be tight on new Iran sanctions and production problems in North Sea. There was news on Thursday saying that the Obama administration expanded sanctions on Iran, in an eff