To investigate ultrastructural pathological change of photoreceptors in early diabetic retinopathy (DR) in rats,and to furnish the morphological evidence of visual dysfunction in DR.是什么意思_To investigate ultrastructural pathological change of photoreceptors in early diabetic retinopathy (DR) in rats,and to furnish the morphological evidence of visual dysfunction in DR.在线翻译_英语_读音_用法_例句