如果軸承用量不是很大，也隻能手工做，是成本問題。

來源: '''''' 於 2025-01-25 15:02:12 [舊帖] [給我悄悄話] 本文已被閱讀：次

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