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Change log entry 72685
Processed by: goldyn_chyld (2021-05-14 15:31:06 GMT)
Comment: << review queue entry 68517 - submitted by 'richwarm' >>
The first sense is in M:
和本錢相等的利息。
《醒世恆言·卷三五·徐老僕義憤成家》:「一色都是見銀,並無一毫賒帳,除去盤纏使用,足足賺對合有餘。」
《初刻拍案驚奇·卷一》:「下等的無金無字畫,將就賣幾十錢,也有對合利錢,是看得見的。」

The second sense is in GR and Wp:
在數學中,對合(英語:involution)或對合函數,是逆函數等於自身的函數
https://zh.wikipedia.org/wiki/%E5%B0%8D%E5%90%88
Diff:
+ 對合 对合 [dui4 he2] /a profit equal to the amount one invested/(math.) involution/
By MDBG 2024
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