A digital signature stamps a proof of origin authenticity.
数字签名标志原始的真实性的验证。
Public key cryptography, combined with the traditional symmetric cryptograph and the message digest technology, can provide confidentiality, integrity and proof of origin.
公钥密码技术结合传统的对称密码技术及信息摘要技术，可提供信息的保密性、完整性和信源确认，是多种安全应用的基础。
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 origin of whales.
起先，金格·里奇还以为这两根骨头分别来自动物左右腿的单滑轮踝骨——这也能证明之前鲸的起源推测是正确的。
Ethnological records are valuable references to our studying the origin of arts. But they can only be regarded as analogy materials rather than proof materials.
文章认为民族学材料对于我们研究艺术起源具有参考价值，但它只能作为类比材料而不能作为实证材料。
Manufacturing mode: plant design manufacture outside China, a country of origin proof, dynamometers shipment must be whole.
制造方式：在中国境外工厂设计制造，有原产国证明，测功器须整体发运。
Manufacturing mode: plant design manufacture outside China, a country of origin proof, dynamometers shipment must be whole.
制造方式：在中国境外工厂设计制造，有原产国证明，测功器须整体发运。
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