较大剂量时，也能舒张外周阻力血管和心肌阻力血管从而降低血压，还可以间接地增强心肌收缩力。
If large doses are used, they can diastole outside resistant blood vessels and myocardial resistant vessels and they can reduce blood pressure and also indirectly enhance myocardial systole.
较大剂量时，也能舒张外周阻力血管和心肌阻力血管从而降低血压，还可以间接地增强心肌收缩力。
If large doses are used, they can diastole outside resistant blood vessels and myocardial resistant vessels and they can reduce blood pressure and also indirectly enhance myocardial systole.
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