[KongchangAI]
Unverified80% confidenceFactTime unknown

腹肌训练类腰带式EMS的电极片应为凝胶贴片且面积≥30cm²,接触面积过小会导致电流密度过高产生刺痛而非有效收缩;单块凝胶贴片正常寿命约20-30次使用后需更换

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80%
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