[KongchangAI]
Unverified90% confidenceDecision RuleTime unknown

近红外线(波长700-1400nm)穿透深度可达皮下2-4cm,适合深层肌肉、关节痛;远红外线(3000nm以上)主要作用于皮肤浅层与表面血液循环,适合放松保暖。选购前先明确是深层疼痛还是浅表保健需求

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