再薄估計都沒問題，纖維素估計不是肉眼來衡量的。

來源: 請教123 於 2019-06-18 11:09:15 [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.