曆史原因，Proof數字的一半等於按容積計算的酒精含量。

來源: TBz 於 2020-03-06 09:28:15 [博客] [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.