Security of information can be obtained by means of two essential technologies: encryption and authentication.

为实现信息安全，需要采用两个基本手段：数据加密和身份认证。

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Intel designs and builds the essential technologies that serve as the foundation for the world's computing devices.

英特尔设计和构建关键技术，为全球的计算设备奠定基础。

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This paper describes the essential technologies of a maritime rescue vessel using a mobile robot with omnidirectional vision.

针对海上搜救的背景，研究了基于全景视觉的移动机器人进行海上救助的关键技术。

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The company designs and builds the essential technologies that serve as the foundation for the world's computing devices.

ENGADGET: Intel and Lenovo release the Classmate+ PC for the kids

But to implement this strategy seems to require that the company manufacture critical components in China, risking the loss of essential technologies.

FORBES: Japan's Automakers Face New Challenges (1): Toyota in China

Howard's 20-foot boat has not only been re-fitted in order to make sailing easier, it is also equipped with essential technologies to ensure the safety of both Howard and other sailors, including an Automatic Identification System (AIS), which alerts Howard to ships within a 50-mile radius.

CNN: 'Blind' man to sail around the world alone