[KongchangAI]
Unverified80% confidenceTradeoffTime unknown

频率与功率是权衡关系:3MHz虽然浅表加热快、见效明显,但能量衰减快、穿透浅;1MHz穿透深但升温慢需更长治疗时间,双频机型(1/3MHz可切换)适用范围更广但价格更高

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80%
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Long-term
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