Most number systems, then, are the by-product of two key factors: the human capacity for language and our inclination for focusing on our hands and fingers.

因此，大多数数字系统都是两个关键因素的意外结果：人类的语言能力及我们对手和手指的关注倾向。

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Integration with key systems and aggregation capabilities support user productivity.

集成关键系统和聚合功能，支持用户工作效率。

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The most main security technology of network system is data encryption, but RSA algorithm is the safest system of key systems.

网络系统最主要的安全技术是数据加密，而RSA算法是密钥系统最安全的一种体制。

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In practice, quantum-key-distribution systems rely on sophisticated optical equipment to prepare, transmit and detect the individual polarised photons that make up the key.

ECONOMIST: Secure cryptography is only as safe as its weakest link

Even the relatively tangible repercussions -- such as the loss of indigenous industrial capability and the attendant, increased reliance on foreign suppliers for components of key weapon systems -- are typically dismissed, or at least subordinated to the perceived greater good of developing globalized relationships with trading partners.

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For instance, satellite operators can power-down key systems to prevent the possible damage to the systems.

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