PHn.[化]酸碱度(=Potential Of Hydrogen)abbr.公共卫生(=Public Health)abbr.紫心勋章(=Purple Heart)phenin[药]芬宁

1. The importance of units of the plant cover broader than the phytocoenose for classification is acknowledged by Soviet geobotanists.
   苏联地球植物学家认识到，比植物群落较广泛的植被单位对于分类的重要性。