[KongchangAI]
Unverified90% confidenceDecision RuleTime unknown

1MHz超声波穿透深度约3-5cm,适合肌肉、韧带、深层组织;3MHz穿透深度仅1-2cm,适合浅层肌腱、关节、瘢痕,家用理疗深层劳损优先选1MHz或1/3MHz双频机型

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Long-term
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