[KongchangAI]
Unverified85% confidenceDecision RuleTime unknown

噪音等级看是否有'静音'皮带/电磁阻力设计,直驱台运转噪音多在55-60dB(接近正常说话),住公寓/有邻居/夜间训练首选直驱;轮压式因轮胎摩擦可达75-80dB

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