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宽枢轴连接设计大大提高强度和刚性。尤其是DURA-ACE,SHIMANO ULTEGRA和SHIMANO 105,内连接和右连接宽度增加,刚性得到增强。抑制弯曲,不管是从低速到高速还是停止时都实现敏捷而更精确、更快、更顺畅的变速。
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