像EH&S，動物房之類的，用戶越多，平均cost越低，大學用戶多，小研究所沒幾個人也得全設一套，當然cost高。

來源: windyLL 於 2025-02-11 10:16:57 [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.