normal skin短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 正常皮肤 皮肤保养 Objective:To investigate the minimal erythema dose MED of normal skin to UVB of Dualight targeted phototherapy system, and observe its relationship to sex, age, skin types to sunlight, etc. 目的：探讨南京地区中波高能紫外线最小红斑量值 MED范围，及其与年龄、性别、皮肤日光反应类型的关系； fabiao