英语语法分析

Objective To explore the influence factors and experimental conditions of phototoxicity test using pure UVA light source.

目的探讨采用单纯紫外线A（UVA）为照射光源的光毒性试验的影响因素及试验条件。

Objective To evaluate the 3T3 Mouse Fibroblast neutral red uptake phototoxicity test(3T3 NRU-PT)method detecting potential phototoxicity of cosmetic products.

目的研究3T3成纤维细胞中性红摄取试验（3T3 NRU PT）在化妆品安全性评价中取代动物光毒性试验的可行性。