单词:carbocyclic ladder polymer
单词:carbocyclic ladder polymer 相关文章
Agriculture Report - 'Property Ladder' Helps Poor Gain Land Rights This is the VOA Special English Agriculture Report. Less than a third of people in developing countries own or have any official right to the land they live on. Groups like UN-Habitat
[00:00.00]2 Pronunciation [00:03.82]Listen and say. [00:06.34]We're going to play football in the park. [00:10.28]I think we should go and get something to eat. [00:14.53]I'm hungry. [00:16.70]Give me five! [00:18.88]They're cool. [00:21.28]Sorry, gu
By Alan Silverman Real-life everyday heroes who fight fires and save lives come to the screen in a sweeping drama set at a big city fire station in the new film, Ladder 49. (Movie Snippet) In firehous
[0:03.626]Self-assessment [0:08.514]Listen, guess and write. [0:13.224]1.What letter is an insect? __________ [0:19.193]2.What letter can we drink? __________ [0:23.216]3.What letter is a vegetable? __________ [0:28.921]4.What letter is a ladder? ___
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
[00:00.22]UNIT 4 [00:07.12]Lesson 16 [00:12.22]Exercise 1.1 [00:14.43]Husband and Wife Save an Old Man [00:17.16]from Burning House [00:19.15]One evening, my wife and I went out for a meal [00:22.96]at a restaurant near our home. [00:25.69]As we were
说一口流利的英语,从简单的单词开始。 听听,读读,背背,今天你的词汇量又增加了5个。 单词/词义 中英例句 单词听读 idealize [ aI5dIElaIz ] He tends to id
Selling a Ladder 卖梯子 There was a big garden near old Mr. Jones house, and it had a lot of fruit trees in it. One day he saw some beautiful apples on one of them. He went home and get a ladder, put it against the high wall of the garden and clim
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
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
BBC Learning English London Life The Housing Ladder [ATMOS of Chris looking for a flat] William:This is London Life and Im William Kremer. Chris Hanley is standing outside an old house in West London. [ATMOS of Chris looking for a flat] William:Chri
(source: CCTV) The official of a village in southwest China has pledged to build a steel ladder as a temporary alternate passway for villagers to the wooden one hanging off a cliff right now. The village official also announced possible road building