标签：zinc 相关文章
GardeningOne of the quiet joys of Gardening One of the quiet joys of life in the southern part of Ontario, Canada, is gardening. Whether pursued as a hobby or solely to improve the esthetic value of one's home, the pleasure derived is only exceeded b
星火英语15篇背完六级词汇
Medicinal tablets are nothing new. Doctors have been dispensing pills for thousands of years. Now, archaeologists have turned up some of those ancient medicines which were preserved in a shipwreck for close to two millennia. The 2nd centry Pozzino wr
Scientific American(一)月
Medicinal tablets are nothing new. Doctors have been dispensing pills for thousands of years. And now archaeologists have turned up some of those ancient medicines, which were preserved in a shipwreck for close to two millennia. The 2nd-century Pozzi
Scientific American(一)月
Medicinal tablets are nothing new. Doctors have been dispensing pills for thousands of years. And now archaeologists have turned up some of those ancient medicines, which were preserved in a shipwreck for close to two millennia The 2nd-century Pozzin
Scientific American(一)月
Medicinal tablets are nothing new. Doctors have been dispensing pills for thousands of years. And now archaeologists have turned up some of those ancient medicines, which were preserved in a shipwreck for close to two millennia. The 2nd-century Pozzi
Scientific American(一)月
This is Scientific American 60 second Science, I am Sophie Bushwick. Got a minute? Medicinal tablets are nothing new. Doctors have been dispensing pills for thousands of years. And now archaeologists have turned up some of those ancient medicines, wh
Scientific American(一)月
On Mondays, the Business Report focuses on technology and that is appropriate because this Monday is the birthday of iPod. The digital music player debuted five years ago today. Here's NPR's Laura Sydell. The singer Madonna has never been one to miss
2006年NPR美国国家公共电台
The government has approved plans for Australia's biggest wind farm to be built near the outback town of Broken Hill in New South Wales. Almost 600 turbines will generate enough electricity for more than 400,000 homes. A forest of giant turbines wil
VOA标准英语2009年(六月)
This is the VOA Special English Development Report. Women wait near their children as they are treated for diarrhea at the government-run Children's Hospital in Allahabad, India, earlier this year. Diarrhea kills one and a half million children each
VOA慢速英语2009年（十一）月
VOICE ONE: This is SCIENCE IN THE NEWS in VOA Special English. I'm Bob Doughty. VOICE TWO: And I'm Barbara Klein. Today, we will tell about a plan to fight a leading killer of children in developing countries. We will tell about a new way to recogni
VOA慢速英语2009年（十一）月
By Nico Colombant Dakar 26 March 2008 Liberia's much-heralded and awaited census is plodding ahead amid problems with workers who want more money and Liberians who are not staying home to be counted. VOA's Nico Colombant has more from our regional bu
VOA标准英语2008年（三月）
By David McAlary Washington 23 November 2006 Scientists have genetically engineered two crops in a way they say will help improve nutrition in poor countries. One group has boosted the levels of certain nutrients in wheat and another team has made t
2006年VOA标准英语（十一月)
A meteorite bursting through the atmosphere over Russia injuring hundreds of folks on the ground. It happened overnight in the fringe of Siberia, sending shock to residents into a state of panic. ABC's Current Rania filed this report just moments ago
万花筒2013年
DAVID GREENE, HOST: The amount of carbon dioxide in the air is rising because of human activity. And NPR's Merrit Kennedy reports that scientists around the world are trying to understand how more CO2 is going to impact the plants we eat. MERRIT KENN
2018年NPR美国国家公共电台6月
The local market rose after minutes from US central bank indicated that US interest rates could be on hold until next year. The All Ords raised index, put on 1.3 percent, the ASX 200 rose across all sectors. Beach Energy surged on a rise of the price
澳洲ABC新闻快递2015年
The business world is sometimes described figuratively as doggy dog. In the state of Maharastra, in western India, the situation is literally cat eat dog. Where the cats are leopards and dogs are, well, dogs. That's the findings of a wildlife conserv
2014年Scientific American(九)月
Urban Food Foraging Looks Fruitful城市水果优点多 Foraging for food in urban areas is on the rise. Not dumpster diving. Collecting fruits and herbs. 在城市觅食越来越流行。当然啦，不是在垃圾堆里翻找食物。而是采摘水果
2017年Scientific American(四)月
An implosion that launches an explosion creating enough heat and energy to forge almost all the other elements.The supernova explosion is able to produce some of the very rare elements heavier than iron, the zinc, the gold, the platinum, the silver,
探索与发现2015年
By Jessica Berman Washington 13 February 2008 Scientists in the United States say they have developed fabrics that can generate electricity. Researchers say they have harvested enough electricity to power small electronic devices such as an mp3 playe
VOA常速英语2008年（二月）
Why Stainless Steel Does Not Rust But Other Metals Do? 不锈钢（Stainless Steel）指耐空气、蒸汽、水等弱腐蚀介质和酸、碱、盐等化学浸蚀性介质腐蚀的钢，又称不锈耐酸钢。实际应用中，常将耐弱腐蚀介质
英语听力文摘 English Digest