Unverified90% confidenceDecision RuleTime unknown

PTC加热+温控探头的机型能维持42℃恒温±1℃，比无恒温机型（水温持续升到50℃以上易烫伤）安全，糖尿病患者必须选带精准恒温的

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90%

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Long-term

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Unverified选择PTC加热+温控芯片的恒温精度应达±1℃，普通电热管机型温差可达±3℃以上，会出现忽冷忽热；养生泡脚建议恒温设定在40-42℃84% similar UnverifiedPTC陶瓷加热恒温精度控制在±1℃以内的机型比机械温控（±3~5℃波动）更适合糖尿病人及末梢神经不敏感人群，避免烫伤风险83% similar

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