Abstract: With the rapid development of unmanned aircraft technology and the growth of low-altitude economic activities, the trend of large fixed-wing unmanned aircraft entering controlled airspace is ...

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Learn about the ideal interest coverage ratio (ICR), what it indicates, and how businesses calculate it to assess their ...

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Abstract: Atmospheric aerosol is closely related to people’s daily life and scientific research activities, especially the frequent haze and dust weather in recent years, which has seriously affected ...