+1, 橡胶管拔的时候拉伸造成内径缩小，自锁紧。

来源: BeyondWind 于 2015-12-20 16:16:31 [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.