Unverified75% confidenceTradeoffTime unknown
震动频率越高清洁越充分但异物感/干呕感越强，敏感人群或易恶心者应选可调低档（8000次/分钟以下）或带缓启动的型号，避免触发咽反射
1
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75%
Confidence
Long-term
Relevance
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