英语语法分析

Main clinical manifestations were exertional dyspnea, chest pain, cough, hemoptysis, syncope, etc.

临床主要表现有活动性呼吸困难、胸痛、咳嗽、咯血、晕厥等。

Objective: To compare the effect of trimetazidine and coenzyme Q10 for treatment of patients with stable exertional angina.

目的：对比研究曲美他嗪和辅酶Q 10治疗稳定性心绞痛的疗效。

AIM: To compare the effect of trimetazidine and isosorbide dinitrate for treatment of patients with stable exertional angina.

目的：比较曲美他嗪与硝酸异山梨酯治疗稳定性劳力型心绞痛的疗效。