W hen the Earth moves from perihelion to aphelion, its radiation belts are expansion, and aphelion to perihelion contraction.

当地球从远日点运动到近日点时，地球辐射带向内收缩。

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Eventually, the accelerated electrons become trapped in the Earth's radiation belts, where they can interfere with satellite communications and navigation.

最后，这些被加速的电子束陷入地球的辐射带之内，可以对卫星通讯和导航系统产生干扰。

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Scientists designed a path that takes Juno around Jupiter's poles, spending as little time as possible in the sizzling radiation belts around Jupiter's equator.

工程师们为探测器设定了一个特定的绕木轨道，经过木星的极区，从而尽可能减少与环木星赤道辐射带的接触时间。

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The number of antioprotons exceeds, by several orders of magnitude, the amount of antiprotons that would be expected outside of the radiation belts.

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Based on observational data of solar storms, the radiation belts, and the plasmasphere during past years, the authors were able to successfully model the Halloween solar storm.

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Chemical and biological sensors already in place on the National Mall will be supplemented with radiological detection equipment, including radiation pagers on the belts of some law enforcement officers.

CNN: Security at record high for WWII Memorial ceremony