单词:frequency wave number migration
单词:frequency wave number migration 相关文章
According to the 2010 World Population Data Sheet, there will be fewer workers to support an aging population in the coming decades. The booming population growth of the past century has slowed, but improving health conditions and stubbornly high bir
今天我们要学的词是 heat wave. Heat wave 热浪。A recent study warns that the number of people dying during heat waves is likely to rise sharply in some regions by 2080 if policymakers fail to take action in climate and health policies. 最近
U.S. Foreign-Born Population Rises to Highest in a Century In the United States, the number of people who were born overseas rose last year to its highest share in over a century. 美国的外国出生人口数量去年上升到了一个多世纪以来
Cassegrain Antenna - An antenna that places a subreflector at the focal point to reflect energy to or from a feed located at the apex of the main reflector. CB - This stands for Citizen's Band and is
Focal Length - Distance from the exact center of the dish to the center of the feed. Focal Point - The physical point in space toward which the satellite reflector dish directs the received signal so
UN, Camps in Iraq Prepare for New Wave of War Victims IRBIL, IRAQ U.N. and camp officials in Iraq's northern Kurdistan region are already preparing for another wave of Iraqis displaced by war to flood into the area as the conflict against Islamic ext
AS IT IS 2015-09-22 US, Germany Deal with the Wave of Syrian Refugees 美国、德国应对叙利亚难民潮 The global migration crisis has put pressure on Europe and other countries to deal with huge numbers of refugees safely and fairly. On Sunda
AS IT IS 2015-03-18 Iran Tries to Stop Declining Birth Rate 伊朗试图阻止出生率的不断下降 The human rights group Amnesty International says proposed new laws in Iran would severely limit womens freedom. It says the countrys leaders want
AS IT IS 2016-10-07 Migration Out of the Middle East Shows No Signs of Slowing 中东难民逃离潮趋势仍未放缓 Recent conflicts in the Middle East are responsible for the worst global refugee crisis in 70 years. Data from the United Nations s
Robot Can Help With Farm Work 可以帮助农民干活的机器人 In the American state of Idaho, a robot moves between lines of fruit trees and grapevines. It is doing farm work. Called IdaBot, this robot is a prototype, or model. An engineering te
AS IT IS 2016-09-21 US Rushes to Admit Refugees Before End of September 美国承诺9月底前接收难民 The month of September has been one of the busiest months for the arrival of refugees in the United States. Almost 79,000 refugees from 78 coun
Record Number of Africans Flee to Yemen A record number of African refugees and migrants have arrived in Yemen this year. Most are from Ethiopia. U.N. refugee agency spokesman Andrej Mahecic says more people are crossing the Red Sea and Gulf of Aden
The International Organization for Migration reports a significant drop in the number of Haitians living in displacement camps. IOM reports for the first time since the catastrophic earthquake struck a year ago, the camp population in Haiti has gone
The International Organization for Migration says there's an urgent need for tougher action against human trafficking in East Africa. The IOM has released a new assessment of the problem, saying men, women and children of all ages are being exploited
8The Lord said to Moses, 2Speak to Aaron and say to him, 'When you set up the seven lamps, they are to light the area in front of the lampstand.' 3Aaron did so; he set up the lamps so that they faced forward on the lampstand, just as the Lord command
In the reshuffle, the Prime Minister has put me in change of the immigration policy? Phil Woolas appointment as Immigration Minister ruffled a few feathers amongst pro-immigration campaigners, and his latest comments would have done nothing to ease t
Now for more on the changing demographics of urban and rural China, we are joined in the studio by my colleague Wu Haojun. We know in the past decades, China has experienced an urbanization drive that has seen the migration of millions and millions o
Chinese scientists have announced a gravitational wave research plan they're dubbing Taiji. The Chinese Academy of Sciences says their research plans will be finalized later this year. Academy member Wu Yueliang says their research will focus on low
Those waves hitting the sand actually begin far out at sea. And it doesnt take much to get them going. A little wind will do the trick. First the wind blows over the surface of the water, generating the little ripples you can see just by blowing acro