Unverified75% confidenceTradeoffTime unknown
便携性与精度存在权衡：干式（无需耦合剂、脚踩即测）跟骨仪操作方便但需定期用体模校准，湿式（涂耦合剂）测量更稳定但操作繁琐，家庭长期监测选带自动校准提醒的干式机型
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75%
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