[KongchangAI]
Unverified75% confidenceTradeoffTime unknown

通风孔数量越多越凉爽但结构强度越低,8-12个通风孔是儿童骑行头盔的平衡点;滑雪头盔则需可开合通风孔以应对不同温度

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75%
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Long-term
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