目的：探讨在人体试验中以最小持续性黑化量(MPPD)作为判断长波紫外线(uva)防护效果指标的可行性。
Objective: To study the feasibility of using minimal persistent pigment dose (MPPD) as an objective parameter in evaluating UVA protection in human.
目的：探讨在人体试验中以最小持续性黑化量(MPPD)作为判断长波紫外线(uva)防护效果指标的可行性。
Objective: To study the feasibility of using minimal persistent pigment dose (MPPD) as an objective parameter in evaluating UVA protection in human.
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