The background radiation from cosmic rays increases with altitude, from 0.3 mSv per year for sea-level areas to 1.0 mSv per year for higher-altitude cities, so for best results use this on a plane or in outer space
/r/WorldNews Live Thread: Russian Invasion of Ukraine Day 1464, Part 1 (Thread #1611)
，推荐阅读旺商聊官方下载获取更多信息
Business: $40/month，推荐阅读一键获取谷歌浏览器下载获取更多信息
这种“认得出、干得了”的能力，来自中科第五纪的技术团队。