SA node
英汉例句
- Activation of the heart normally begins in the sinoatrial node.
在正常情況下，心髒的活動始於竇房結。 - This process continues over and over as the atria refill with blood and other electrical signals come from the SA node.
隨著心房的再次充血和竇房結電信號的再次産生，這個過程會一直重複下去。