signaturen.签署；书帖；有特征的符号；【计】签名signature protocol签名协议signature inversion旋称反转signature of holder持票人印鉴signature technique签名技术signature of matrix矩阵的正负符号差signature of bearer持证人签字signature of treaty条约签署signatures matching签名匹配signature structure标签结构signature on scroll题署,署名