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jokergundam:曲柄盖是指shimano一体牙盘轴心的那个塑料螺丝吗?是的话,m207900和6800通用,仅长度有区别,古董的螺纹长度10mm,后面新出的螺纹长度15mm....... (2024-12-04 20:22)
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