电动机后者就成了对原产地证明(Proof of Origin)的认可，电动机的工作原理即加密认可这一概念的基础。电动机的工作原理
2
?原始性证明
原始性证明（Proof of origin）是对消息或数据的发送者进行标识的证据。断言消息由正确标识的发送者传送，并且不会重新发送以前传送过的消息。
3
?来源证明
... 识别证明 proof of identity 来源证明proof of origin 程序正确性证明 proof of program correctness ...
4
?债务证明
... 迅速装船 prony brake 债务证明proof of origin 产地证明 proof of title ...
双语例句
1
A digital signature stamps a proofoforigin authenticity.
数字签名标志原始的真实性的验证。
2
Public key cryptography, combined with the traditional symmetric cryptograph and the message digest technology, can provide confidentiality, integrity and proofoforigin.
At first Gingerich thought the two bones were the single-pulley astragali from the animal's left and right legs-proof that he'd been right about the originof whales.