[KongchangAI]
Unverified80% confidenceTradeoffTime unknown

便携性与真实度冲突:软质充气便携模型轻但胸阻力偏软难以练出真实按压力度,硬质带弹簧机型重(5-8kg)但反馈真实,外勤流动教学优先便携,固定教室优先真实

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