Unverified90% confidenceTradeoffTime unknown
搭配内变速(Nexus/Alfine)几乎免维护、不掉链,但齿比范围比外变速窄,长陡坡或复杂地形下档位选择余地明显不足
1
Sources
90%
Confidence
Long-term
Relevance
-
First Seen
Sources
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