The Ancillary Services (as) are essential measures to guarantee the quality of electrical power in power system, which makes the system to operate safely and economically.

辅助服务是满足电力系统的安全经济运行，保证一定的电能质量的必要措施。

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A common distribution core that provides all electrical power, gases, chemicals, and other services to the sectors of an automated wafer processing system.

一种公共分配中心，向自动化晶片处理系统中的各个部分提供所有的电源、气体、化学原料和其它服务。

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The integrated control box increases the reliability of the electrical system and provides easy services acess via diagnosis system.

集成的电器中央控制盒使电器系统更可靠，维护更简单。

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One substantial achievement, announced earlier this month, will make it much easier for Tribes to gain access to USDA funding for water and sewer improvement projects, electrical system upgrades and telecommunications services including broadband.

WHITEHOUSE: USDA Highlights Efforts to Give Tribes the Tools to Improve Basic Services | The White House

Ndow said his truckers currently use IdleAire, an electrical system trucks can plug into for cooling, heating, and other services like the Internet.

CNN: An eco-friendly way to cool big trucks