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countersignature

['kauntə'sɪgnəʧə] 名词
信息技术 Mitunterschrift f
商业活动 Gegenzeichnung f
微软 Gegensignatur f (A signature of an existing signature and message or a signature of an existing signature. A countersignature is used to sign the encrypted hash of an existing signature or to time stamp a message)
技术 Unterschrift f