Unverified80% confidenceTradeoffTime unknown
灵敏度越高越易听清微弱心音，但也越容易放大环境噪音和毛发摩擦声；家庭普通监护选中等灵敏度带调音膜的款即可，不必追求兽医心脏专科级
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80%
Confidence
Long-term
Relevance
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