To study normal white rat osteoporosis L4 vertebrae telescope viscoelasticity property caused by vitaminAacid, supply bioviscoelastic mechanics parameter with clinic.
研究正常大鼠椎骨和维甲酸所致大鼠骨质疏松L4椎骨的粘弹性性质，为临床提供生物粘弹性力学参数。
2
Vitaminaacid and antibiotic medicines are the main measures of Western medicine to cure the common acne. But it usually has the characteristics of great minus effects and high-rate of relapse.
现代医学通常运用维甲酸及抗生素类药物治疗本病，但普遍存在着副作用大、复发率高的缺点。
3
Folate, and the related folic acid or vitamin B9, is part of the vitamin B-complex family, which as a whole has cancer-preventive properties.