- 双语例句
1、
The sinoatrial node at the junction of the superior vena cava and the right atrium.
窦房结位于上腔静脉与右心房的交界处.
——期刊摘选
2、
Objective: To study age - related variation of ratio and type of collagen fibers in human sinoatrial node.
目的了解窦房结的胶原纤维年龄变化及分型.
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