e, satellite-ground, and ground-based" segments, an industry information website cww.net.cn reported on April 9. So far, human communication systems have mainly covered the Earth's surface, and e
奖。1986年4月26日，苏联切尔诺贝利核电站4号机组突然爆炸，大量强放射性物质泄漏，酿成人类和平利用核能史上最严重的事故之一。（央视新闻）
"inter-satellite laser links and satellite-ground microwave links." In this process, data is transmitted from the ground, relayed between satellites via laser links, and then sent back to the ground,
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