n.电离层

The ionosphere is a layer of the Earth's atmosphere that contains a high concentration of ions and free electrons, enabling radio waves to travel long distances.
电离层是地球大气中的一层，其中含有大量离子和自由电子，使得无线电波能够长途传播。
During the day, solar radiation energizes the ionosphere, creating a region called the F-layer where high-frequency radio signals can bounce off, providing global coverage.
白天，太阳辐射使电离层活跃，形成一个叫做F层的区域，高频无线电波可以反射，从而实现全球覆盖。
The ionosphere plays a crucial role in satellite communications, as it reflects signals back to Earth when they reach the upper limits of terrestrial transmission.
电离层在卫星通信中起着关键作用，当信号达到地面传输的极限时，它会反射回地球。
Scientists constantly monitor the ionosphere for changes, as these can affect GPS accuracy and disrupt radio communication.
科学家们持续监测电离层的变化，因为这些变化可能影响GPS定位的精确度并干扰无线电通讯。
The ionosphere acts like a natural shield, protecting us from harmful ultraviolet radiation during solar storms.
电离层就像一个天然屏障，在太阳风暴期间保护我们免受有害紫外线的伤害。
The ionosphere's ability to reflect radio waves makes it an important resource for amateur radio enthusiasts and shortwave listeners around the world.
电离层反射无线电波的能力使其成为全球业余无线电爱好者和短波监听者的重要资源。
In space exploration, the ionosphere poses challenges for spacecraft, as it can interfere with their navigation systems and cause drag on their orbits.
在太空探索中，电离层对航天器构成挑战，它可能会干扰其导航系统，并在轨道上产生阻力。
The ionosphere's density varies with altitude, which is why scientists use models to predict how signals will behave at different frequencies.
电离层的密度随高度变化，因此科学家使用模型来预测不同频率的信号如何表现。
Researchers study the ionosphere for its role in atmospheric chemistry, as it undergoes chemical reactions that influence the formation of certain molecules.
研究人员研究电离层，因为它在大气化学中扮演角色，参与影响特定分子形成的各种化学反应。
The aurora borealis, or Northern Lights, are a stunning display of charged particles interacting with the ionosphere, creating colorful light shows in the sky.
北极光，或称为极光，是带电粒子与电离层相互作用的壮观景象，创造出天空中的彩色光影秀。