英语语法分析

Sample preparation consisted of protein precipitation with perchloric acid.

血浆样品加高氯酸沉淀蛋白后分析。

The results indicate that the product yield of perchloric acid reaches 80%.

实验结果表明，可以得到产率80 %以上的高氯酸。

Amines were extracted with perchloric acid solution and derived with dansyl chloride.

高氯酸溶液提取，丹酰氯衍生，再用氨水去除尸胺干扰峰。