单词:polymer systems
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B2b [00:01.94]2b [00:04.78]Listen again. Fill in the blanks [00:07.71]with the correct verds from the box. [00:09.86] [00:10.88]Conversation 1 [00:13.35] [00:14.13]Hi,I'm Alexis. [00:16.84]Nice to meet you,Alexis.I'm Joe. [00:18.77]Nice to meet you,J
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
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
NB: This is not a word for word transcript Alice: Hello, I'm Alice. Stephen: And I'm Stephen. Alice: And this is 6 Minute English! This week were talking about sat navs. Stephen: Sat navs thats short for satellite navigation systems. Alice: Theyre th
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
Electric Vehicles Going Out of Style? Not in China What is China seeing in electric vehicles that the rest of the world is missing? 中国看到了哪些被世界其他国家忽视的电动汽车的优点呢? Chinese car companies are behaving like
Flying Robots Are Coming to US Universities Flying devices, called drones, may be one of the most important technologies of the future. The number of jobs for people who know how to design, build and control them is increasing. Because of this increa
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
The engines powering the Royal Navys cutting-edge fleet of Type 45 destroyers are unable to operate continuously in the warm waters of the Gulf, MPs were told on Tuesday. 周二,英国国会议员们被告知,英国皇家海军(Royal Navy)最先进
A survey by China Youth Daily has revealed that 67.1% of people see better pay as the primary incentive when applying for new jobs. 《中国青年报》近日开展的一项调查显示,67.1%的人将更好的待遇视为跳槽的主要动力。 O
Leaders Satellites Space: the next startup frontier 社论精粹 卫星 太空:下一个 Where nanosats boldly go, new businesses will followunless they are smothered with excessive regulations 微型卫星大胆地去哪儿,新的商业就会跟去
The Director of the State Council's Hong Kong and Macao Affairs Office, Wang Guangya, says that the central government will always support Hong Kong and Macao, and stick to the One Country, Two Systems principle. I can responsibly say that policy in
Business. 商业 Air conditioning 空调行业 Cool innovation 很酷的发明(制冷方面的发明) An upstart hopes to make rival cooling companies sweat 这个挑战者渴望把与之竞争的空调公司逼出汗来 ON A hot July day in 1902