英语语法分析

Sinus rhythm can often be maintained with quinidine.

奎宁丁常可用以维持窦性节律。

Figure out the chemical reaction equation of Quinidine Sulfate with perchloric acid and the equivalent relationship.

写出高氯酸滴定硫酸奎尼丁的滴定反应式并计算滴定度？

However, the effect of Berberine to prolong lethal time induced by Ouabain is less effective than Sodium Phenytoin, Quinidine and Propranolol.

但黄连素延长哇巴因对豚鼠的致死时间作用不及苯英钠、奎尼丁及心得安等药物。