英语语法分析

L-ascorbyl palmitate in the methanol extract is hydrolyzed under acid condition, and 2, 6-dichlorophenol indophenol sodium solution is titrated with the hydrolysate.

用甲醇对油样中l -抗坏血酸棕榈酸酯进行提取，对提取物在酸性条件下水解，用水解产物对2,6 -二氯酚靛酚钠溶液进行滴定。

The accuracy can be optimized by strengthening quality control of critical factors in the process of test of ammonia density in indoor air with indophenol blue photometric method.

通过对室内空气中氨的靛酚蓝分光光度法检测的整个相关过程的影响因素进行质量控制，从而提高室内空气中氨浓度检测的准确性。