英语语法分析

What anodyne is acetanilide better?

什么止痛药止痛比较好？

Acetanilide was used as the standard regent.

以乙酰苯胺作为标准试剂。

Acetanilide and hexane diacid, potassium hydrogen phthalate could improve PVC crystallinity.

乙酰苯胺、己二酸和邻苯二甲酸氢钾可以使PV C结晶度增大。