目的：探讨消旋去甲乌药碱治疗病态窦房结综合征的作用机制。

Objective: To investigate the mechanism of higenamine in treatment of sick sinus syndrome.

youdao

喷漆系统：自动油漆喷枪、自动静电喷枪、各种水帘式、水旋式、式油漆喷房。

Spray - paint system: automatic paint spraying gun, automatic static spraying gun, all kinds of water curtain spray - paint room, water revolving spray paint room, spray - paint room.

youdao