遥感图像归纳为三方面特征,即几何特征、物理特征和时间特征这三方面特征的表现参数为空间分辨率、光谱分辨率、辐射分辨率和时间分辨率
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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