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。

youdao

Then we divide the system into four modules and analyze detail design and essential technologies respectively.

然后将系统划分为四个大模块，并分别对这四个模块的详细设计和关键技术进行了分析。

youdao

Essential technologies involved in modern power engineering, major problems as well as their solutions are addressed.

提出了现代动力工程技术的关键技术、存在的主要问题及对策。

youdao

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