[KongchangAI]
Unverified85% confidenceCautionTime unknown

水上头盔必须设计有排水孔(drainage holes)而非仅通风孔,落水后能快速排出内部积水避免下坠感;无排水孔的陆地运动头盔改用于水上会因积水增重导致颈部负担和视线偏移

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