短語(yǔ)詞組短語(yǔ)relative biotic density index 相對(duì)生物密度指數(shù)的relative optical density 相對(duì)光密度;相對(duì)光密度值relative vertebral density 相對(duì)脊椎密度relative population density test 相對(duì)菌叢密度試騐maximum relative specific density 最大相對(duì)密度relative root density 相對(duì)根密度relative current density 相對(duì)即時(shí)密度Relative Mean Density 相對(duì)密度relative radiation density 相對(duì)輻射密度 返回 relative density