danger coefficient

• 危险系数

danger coefficient的用法和样例：

例句

1. Sunflower essence contains plenty of anti-oxidant, and can completely block UVA and UVB, obviously drop the coefficient of sunburn.
   太阳花精华蕴含丰富的抗氧化剂，减少紫外线对皮肤的伤害，显著降低肌肤晒伤的危险系数。