Me
Preview
Open in TheBrain
ME
组成
4:实验室检查
针对性检查
心血管系统
心电图
3:录图
12导联
3:单极胸前导联
V4
V4
:在左锁骨中线与第5肋间相交处
Attachments
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Parents
3:单极胸前导联