短語詞組短語relative backscatter coefficient 相對后向散射強(qiáng)度atmospheric backscatter coefficient 大氣后向散射系數(shù)backscatter coefficient measurement error 散射系數(shù)測量誤差integrated backscatter coefficient 后向散射比coefficient backscatter 反向散射系數(shù) 返回 backscatter coefficient