单词：special field of radiation
单词：special field of radiation 相关文章
This is the VOA Special English Development Report. Microfinance is becoming a big business. It started as a way to provide very small loans to people in developing countries so they could begin to move themselves out of poverty. A few hundred dolla
VOA慢速英语2008年（十二）月
Many voters are disappointed with Californian Governor Arnold Schwarzenegger's job six years into his tenure and believe things will get worse, the latest Field Poll showed Sunday. The survey found 59 percent of those surveyed believe the state will
英语新闻
The solar system is a hostile place. Earth is under attack from deadly cosmic radiation. Life here is only possible, because it's protected by the magnetosphere, an invisible force field that cocoons the planet. But new evidence reveals that this vit
自然百科2011年
As the reversal approaches, the decay of our magnetic field will continue and cosmic radiation will get increasingly close to the Earth's surface. As the reversal approaches, the decay of our magnetic field will continue and cosmic radiation will get
自然百科2011年
In polar regions where the magnetic field is / weakest, auroras glow in the sky. These dazzling displays of colored lights form when solar particles slam into gases in our atmosphere causing them to glow. The stronger the solar wind, the more dramati
自然百科2011年
Blockson's computer model reveals that at the South Atlantic Anomaly, the magnetic field isn't just weaker than anywhere else on the planet. It's actually reversed polarity. There is a patch on the core in the South Atlantic where things are not poin
自然百科2011年