[KongchangAI]
Unverified80% confidenceFactTime unknown

脉冲频率主流机型为1200-1700次/分钟,频率与水压协同作用,1400次/分钟以上配合脉冲冲击对牙菌斑清除更充分

1
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80%
Confidence
Long-term
Relevance
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