[KongchangAI]
Unverified85% confidenceTradeoffTime unknown

振幅深度与噪音、重量存在权衡:大振幅深层款通常电机更大更重、噪音更高;追求便携静音往往牺牲渗透力,日常放松7-9mm即够,专业深层才需10mm+

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85%
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