[KongchangAI]
Unverified90% confidenceDecision RuleTime unknown

1MHz频率超声波穿透深度约3-5cm,适合深层肌肉、关节劳损;3MHz频率作用深度仅1-2cm,适合浅表软组织和面部理疗。慢性腰肌劳损、肩周炎应选1MHz或双频可切换机型

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