胎壁太厚，起不了缓冲，只好胎面用软一点材料，当然磨损快了

来源: khyang86 于 2016-12-16 20:25:51 [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.