[KongchangAI]
Unverified80% confidenceTradeoffTime unknown

容量与携带重量存在直接矛盾:4L铝罐约0.4-0.6kg便于随身,但供氧次数少;大容量瓶重达数kg需背负,徒步爬升时反而成为负担,登山应按分段行程分携小罐

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