Three of the four tested units failed to block many of the security threats delivered by the three security effectiveness test systems.

4个被测设备中的3个，在阻止三套安全效率测试系统提供的许多项安全威胁攻击时均告失败。

youdao

As one of the three civil aviation systems, Air Traffic Management (ATM) system plays a very important role in security of civil aviation.

作为民航三大系统之一，空中交通管理(atm)系统对民航安全起着十分重要的作用。

youdao

Participate in the making of corporate management systems and security systems, (have) three years' experience in the use of ERP, skillfully master office software.

参与制定公司管理制度及安全制度，三年ERP使用经验，熟练掌握办公软件。

youdao

With the cloud, the City is streamlining and consolidating these three systems into one, reducing outages, improving security and ensuring that all employees who need access to email and desktop applications have them.

ENGADGET: Microsoft to provide cloud services for city of Chicago in four year deal

Previously, the City managed three separate email systems internally, providing challenges to efficiency and security.

ENGADGET: Microsoft to provide cloud services for city of Chicago in four year deal

Washington (CNN) -- The companies that control critical infrastructure in the United States are reporting higher numbers of attacks on their systems over the past three years, according to a report issued by the Department of Homeland Security.

CNN: Homeland Security cites sharp rise in cyber attacks