英语语法分析

Most of the reactions were mild and of the urticarial type.

大部分的不良反应是不严重的荨麻疹类型的。

Objective To explore the clinical features and mechanism of urticarial vasculitis.

目的探讨荨麻疹性血管炎临床特征及发病机理。

Azo dye can, in some people, cause allergic reactions such as urticarial, angioedema and gastric problems.

偶氮染料可引起一些人过敏反应，比如荨麻疹，血管性水肿和胃的问题。