n.心脏收缩
What are the reason that the problem here is systole and mechanism. 这里的问题是收缩的原因和机制是什么。
The length in the diastole was bigger than that in the systole. 在舒张期其可视长度比收缩期长。
The highest value of aortic blood pressure in systole. 指心室收缩主动脉压达到的最高值。
Next, your heart’s ventricles contract (an event called ventricular systole) and pump blood out of your heart. 接下来，心室收缩（称为“心室收缩期”）将血液泵出心脏。
Your heart’s ventricles then contract (ventricular systole), pumping blood out of your heart. 接下来，心室收缩（心室收缩期）将血液压出心脏。
n.心搏停止；心律停止
