短語詞組短語Directionality Property 方向屬性directionality index 方向感指數(shù)directionality functtion 方向性函數(shù)radiant directionality 輻射方向性directionality problem 方向問題;方向性問題Vertical directionality 垂直指向性traffic directionality 道路通行方向Plane directionality 平面方向性Directionality Principle 方向性原則 返回 directionality