游离酸用英语怎么说?

free acid

例句
Specifications For Sun-flower Seed Oil: Free fatty acid 2% max. Moisture& impurities 0.4% max.
葵花籽油规格：游离脂防酸最高2％。水份杂质最高0。4％。

To undergo dissociation.
分离；游离

floating ribs are not connected with the sternum; a floating kidney.
游离肋就是没有和胸骨连在一起的肋骨；游离肾。

Not combined with another element
未与其他元素化合的；游离的

free microscopic particles of solid material.
构成固体材料的游离的精细颗粒。