单词：hub vortex cavitation
单词：hub vortex cavitation 相关文章
This is Whats Trending Today When it comes to weather, it is hard to sound more frightening than to call a storm a bomb cyclone. 谈到天气，很难听到什么比炸弹旋风更可怕的了。 But that is how weather experts are describing a huge
2018年VOA慢速英语(一)月
不怕伤鸟：无扇叶涡轮风力发电机 Wind turbines are efficient sources of cheap energy but also a source of concern as their huge spinning blades frequently kill birds and bats. A new type of wind generator developed in Spain offers a crea
VOA双语新闻 2015年6月
Henan's provincial capital, Zhengzhou, is quickly becoming one of China's key gateways for international trade. Located at the heart of country, the city has become a critical hub for the Belt and Road initiative. At a rail freight terminal in Zhengz
2018CRI中国国际广播电台
By Mandy Clark Dublin 08 January 2008 Ireland's economic miracle of the 1990s transformed one of Europe's poorer countries into one of its wealthiest. But, that transformation has brought with it change and the Irish are having to cope with an influx
VOA标准英语2008年（一月）
Organisers of this year's Art Basel Hong Kong say the fair is bigger than ever before - thanks to international galleries wanting to take advantage of the Asian market. It's the latest in a line of prestigious art fairs to throw open its doors in Hon
cctv9英语新闻2017年
Jul 22 (Reuters) - Internet giant Yahoo Inc is looking to sell HotJobs and Yahoo Small Business as part of its drive to shed its non-core assets, peHUB, owned by ThomsonReuters, said, citing sources familiar to the matter. They have been approached b
英语新闻
Marek Zalewski 21 December 2009 Food distribution in Kenya Despite the post-election violence that broke out in Kenya last year, the East African country is widely viewed as an island of stability and economic progress in a region plagued by war and
VOA标准英语2009年(十二月)
Extreme Cold Freezes Much of United States From VOA Learning English, this is In the News. A weather system known as a polar vortex brought dangerously cold weather to large parts of the United States this week. A polar vortex is a cold, thick low pr
2014年VOA慢速英语(一)月
Bladeless Wind Generator Safe for Birds Wind turbines are tall structures with large blades used to produce electricity. They are useful sources of low-cost, renewable energy. But they can also be deadly to birds and bats. The turbines large blades t
2015年VOA慢速英语(七)月
Technology Hub Launches Businesses in Cameroon Zinger Systems began as a business idea in the minds of a few Cameroonian entrepreneurs. After they spent one year developing their academic software and business model at Activspaces, a technology hub i
VOA标准英语2012年(一月)
Local authorities in Xinjiang's regional capital, Urumqi, are working to help turn the city into a major transportation hub along the Belt and Road. At the service hub for China Railway Express in Urumqi, a cargo train loaded with construction materi
2018CRI中国国际广播电台
What do a hummingbird, a moth, and a maple tree have in common? They all use a similar trick to fly. Okay, okay, a maple tree doesnt fly. But its seeds kind of do. Maples make those little whirlybird seeds you see spiraling down in droves each sprin
60秒科学
China's national observatory renewed its orange alert for cold wave- the second highest level - on Sunday evening. Sun jun, chief forecaster of the National Meteorological Center, says the strong cold front is linked with the activity of the polar vo
英语新闻
The mascot, Kangkang, debuted on Thursday. It's based on a colored ink prototype painted by well-known Chinese artist Han Meilin. The 80-year-old is the man behind the famous fuwa, the mascots for the Beijing Olympic Games in 2008. For the Spring Fes
英语新闻
Temperatures in Beijing dropped to below minus-10 degrees Celsius on Friday. Forecasters are warning the temperatures are going to hit a 30-year low through this weekend. Yu Bo is the chief forecaster with the Beijing Municipal Meteorological Center.
2016CRI中国国际广播电台
China's national observatory renewed its orange alert for cold wave- the second highest level - on Sunday evening. Sun jun, chief forecaster of the National Meteorological Center, says the strong cold front is linked with the activity of the polar vo
2016CRI中国国际广播电台
A polar vortex, also known as a circumpolar vortex, is a wind current that circulates above the North and South Poles. The currents sit like spinning hats above the Poles. 极地涡旋，又叫环极涡旋，是环绕在南极和北极上空的一股气
英语新闻
Now let's get some of the science behind the cold. What is driving these temperatures and how long is it expected to last. We bring in meteorologist Alex Wilson of US' Weather Channel. As even talking about this unusual cold, something you've been he
CCTV9英语新闻2014年01月
What Is the Polar Vortex? Record cold weather in the United States is forcing schools and businesses to close. The polar vortex, as it is called, has also canceled flights and suspended mail delivery. The temperature in Fargo, North Dakota, dropped t
2019年VOA慢速英语(二)月
When a prospective employer makes unreasonable demands on you before things start to get serious, it's a strong signal to hit the road. 当一位未来雇主在工作还没正式之前就提出了无理要求，那么明显说明你需要跑路了。
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